Her Brother’s Best Friend

Author's note: all characters are 18+

***

Aiden's voice came from behind the door. "Jess, is everything ok? I thought I heard something."

"I'm okay," Jess called, praying her voice sounded normal.

The knob began to turn. Jess, panicked, said the first thing that came to mind that would be guaranteed to keep her brother from walking in: "I'm not dressed!"

The knob stilled. "Um... ok then. I guess I'll see you in the morning."

Jess's heart raced in her chest. Finn was spooned behind her, his chest flush against her back, and she could feel his heart beating wildly. His arm, already holding her to him, tightened slightly, his hand covering hers and gripping it. They both held their breath, silent for long moments.

When it was clear that Aiden had gone back to his own room, Jess let out a sigh of relief. In her ear, Finn also released a heavy breath. "That was close."

Jess wanted to ask him about how they could talk to Aiden about them, but at the moment she was exhausted. Her eyelids drooped as Finn snuggled her closer. Worn out emotionally and physically, she quickly fell asleep.

***

Jess woke to something hard against her butt. Not fully awake, she moved against it and felt it jump. Realization hit her at the same time that Finn ground against her, the action nestling his cock deeper into the split of her ass cheeks. They were both naked, his arm securely fastened around her and banded under her naked breasts.

Jess cracked one eye open. It had to be really early—it was still dark out.

"You awake?" Finn whispered, his lips hot on her neck. She nodded and he moved his hand from where it rested on her tummy down to her smoothly waxed slit. She bit back a moan as he traced the seam of her lips, then parted them and ran his fingers from her clit to her entrance.

Finn exhaled harshly at the wetness that coated his fingers. His lips found her earlobe and bit gently as he dipped and swirled his digits over her sensitive button. He breathed heavily, his voice low and growly in her ear."I'm so fucking hard for you."

He flexed his steely erection into her backside, the wetness seeping onto him and creating natural lubrication for him to rub his cock in-between her ass cheeks.

"Finn..." she whispered his name,

her voice needy. He lifted her leg slightly and notched his fat tip at her entrance. Jess pushed her ass back to take him in.

Finn hissed out a breath as he stuffed himself inside Jess' small pussy. In this prone position, with her legs mostly closed, it was an even tighter fit than usual and he had to really work to get it in.

Jess whimpered, full to the brim, stretched almost to the point of discomfort. But then Finn's hand returned to her clit and his fingers resumed their magic, and it felt incredible.

Finn worked himself in and out of her with short, shallow thrusts. Jess found her own rhythm, moving back to meet him stroke for stroke. Pleasure coiled tighter and tighter until she exploded into an intense orgasm.

"Fuck, I can feel you." Finn's voice was full of wonder as he felt the rhythmic clenching of the muscles of her pussy as she climaxed.

Finn pulled out and turned Jess from her prone position so they were face to face. He moved over her, sliding his hands down her thighs and spreading them wide.

He entered her again and drove deep. Holding her hips, he began to pound into her, his breath coming faster as he slammed his cock in and out.

Finn thrust hard and then stilled over her, holding himself deep inside her as he came. His mouth met hers, and she swallowed his groan. They kissed slowly, their breaths mingling.

He turned into his side, and Jess could feel his warm essence leaking out of her. She thought about getting up to clean herself up but she was so sated, her body so heavy, all she wanted to do was go back to sleep.

She was vaguely aware of Finn getting up and moving around her room, and then she felt a caress on her cheek and his lips on her forehead.

"I need to go before your parents get up," he whispered. "I'll see you later."

She mumbled something incomprehensible, turned over, and was asleep before Finn had left her room.

***

Sunlight streamed across Jess' face. She awoke in stages, memories of the night before —and this morning—filtering back into her consciousness. She moved and grimaced at the twinge between her legs.

Finn was gone, but his scent lingered on the pillow. She closed her eyes and buried her face in it, inhaling deeply.

With a secret smile on her face, Jess got up to make herself breakfast and work out.

After a five mile run, Jess stretched in the living room, post-workout, Britney Spears blaring in her ears. She bent her leg into a lunge, then jumped when she felt a hand on her shoulder.

She pulled her earbud out of her ear. "Jeez!" She gave her big brother a light shove. "You scared the crap out of me!"

Aiden smirked. "Hey, it's not my fault you couldn't hear me. I was calling you."

She removed the other earbud and switched off her music. Moving her other leg into a lunge, she glanced Aiden's way, trying to remain calm. If he was suspicious about what he'd heard last night, surely he wouldn't be joking with her?

"So what's up?" She tried for a light tone, but it sounded weird even to her own ears. Fuck, she was bad at this. She hoped Finn could come up with a plan to talk to Aiden soon because otherwise she was going to go crazy.

Aiden didn't seem to notice, though. "Some of the guys are coming over this afternoon. Thought we'd hang by the pool. Just wanted to make sure you were cool with it."

Jess felt some of the tension leave her body. "Sure, fine with me. Who's coming?"

"Finn, Brad, maybe Jason, if his dad doesn't need him at the shop."

Brad and Jason were two other friends of Aiden's. Brad, a computer whiz who'd gotten a full ride to MIT, had been around nearly as long as Finn. Jason, on the other hand, was a more recent addition. Aiden had befriended him in their last year of high school, shortly after Jason and his dad had moved here. His dad owned their town's only tattoo shop. Instead of going off to college, Jason stayed local to apprentice with his father as a tattoo artist, and planned to take over the business one day.

Jess was reading a paperback mystery out by the pool when she heard voices and the sound of the sliding glass door open. Shading her eyes, she watched as Aiden and his three friends walked out onto the deck in their board shorts.

Brad looked the same as he had since middle school- tall and lanky, with wire-rimmed glasses and a shock of red hair. He appeared even paler than usual next to Jason, with his dark hair and olive skin, colorful tattoos decorating both well-muscled arms.

Jess had never seen Jason without a shirt on, and he was cut. His stomach was ridged with thick muscle, his abs sharply delineated in a way that spoke of strenuous daily workouts.

Her gaze moved past Jason to Finn. She was taken aback as she met his eyes. They glittered with anger.

She couldn't help the small smile that curved her lips. Clearly Finn had seen her looking at Jason's six-pack and he didn't like it. But she loved the fact that he was jealous—it made her feel all melty inside.

Even with the sour expression on his face, Finn was gorgeous. She took a moment to drink him in, from his tousled dark gold hair to his sculpted arms and chest, his washboard abs, down to the golden trail that disappeared into his navy board shorts.

The guys dropped their towels on the other loungers. Aiden set down the mini-cooler he was carrying, opening the top to reveal multicolored cans sitting in ice. He tossed one to each of his friends. He looked over at Jess. "Want one?"

"Sure." She swung her legs over the side of the lounger and stood, walking over to the cooler and examining the selection. Bud Lights or White Claws. She chose a can of Blackberry flavored White claw, popped it open, and sipped.

She felt someone's gaze on her and looked up. Jason was watching her, his eyes hot, taking in her lithe body in her white bikini. The top tied between her breasts, and the white bottom tied at the sides. The style was called "cheeky" because it revealed the rounded bottoms of her ass cheeks.

Jason smiled at her, revealing perfect, straight white teeth.

Jess blushed, not used to the attention.

Aiden also caught his friend looking. "Watch it, Jase," he said jokingly. "Keep your eyes to yourself. My sister is off limits to you."

Jason laughed. "She's eighteen. I don't think she needs your permission. And I certainly don't."

"She's legal, but I'm still her big brother." Aiden's tone was light, but Jess could hear an undercurrent of warning.

"Oh yeah? What're you gonna do?" Jason raised an eyebrow.

Aiden snorted. "Shove an umbrella up your ass and open it."

"Ouch!" Jason rubbed his butt as if imagining the pain, and Aiden burst out laughing.

Jess ducked her head, embarrassed at the whole situation. She stole a look at Finn. He was silent, his arms crossed, glaring at Jason.

"A!" Aiden turned and Brad, already in the pool, threw him a basketball. Aiden reflexively caught it. "How about a rematch?" Brad gestured to the pool basketball hoop installed at one end of the pool.

"Oh, you're on," Aiden replied, then joined his friend in the pool.

Jess went back to her lounger and started to re-apply some suntan lotion. As she rubbed the cream into her shoulders, she sensed someone behind her.

"Can I borrow some of that?" Jason held out his hand. "Forgot mine."

"Um, sure." She handed him the bottle and deliberately looked away as he began to spread the sunblock over his chest and stomach.

"Could you maybe get my back?"

At his words, Jess's eyes flew to Finn. His jaw ticked and she knew they were remembering the same thing she was: she'd said that exact thing to him the first time they'd been together, here by the pool.

His hands were clenched around the armrest of the lounger, his knuckles white.

Oh, shit.

She quickly took the lotion and smeared it on Jason's back. She knew she wasn't doing a very good job, but she didn't want to cause a scene, and Finn looked about ready to explode.

As soon as Jess was done, she grabbed her book and cover-up. Not making eye contact with Finn, she called to her brother, splashing in the pool. "I actually gotta head in. Y'all have fun."

A cool blast of AC hit her as she walked inside. She placed a palm on her cheek, feeling how hot it was, and knowing the heat was only part of the issue.

Jess dropped her book on a coffee table and shook out her pink sarong, then wrapped it around herself and tied it at the neck.

Maybe some cold water would cool her down. Opening the refrigerator, Jess reached for a bottle of water.

A small shriek erupted from her mouth as someone grabbed her hips from behind. She whirled around to see Finn, whom she hadn't even heard come in.

She had mere seconds to take in the dark expression on his face before he slammed the refrigerator door shut and pushed her against it, placing one large hand on either side of her head, caging her in.

She was a little scared, but also

turned on. She knew Finn wouldn't hurt her, but she'd never seen him look like this before. Lethal, dangerous.

At the same time, something primitive inside her thrilled at his jealousy and possessiveness.

Still, she didn't like being pushed around like this, and it was his fault that Aiden's friend didn't see an issue with hitting on her. It wasn't like he was advertising that they were a thing.

She pushed at his chest. "What are you doing? You're acting like an asshole."

"You're the one who was staring at another guy. Touching him." His voice was a low rasp. "I fucking hated it."

Finn thrust a knee between her legs to widen them. He fit himself in the space in between, letting her feel his erection.

Jess gasped. "Anyone could walk in and see us..."

He grabbed her hands and pinned them above her head. "I don't give a fuck."

His lips crashed down over hers, his tongue demanding entry. She opened underneath him and he thrust his tongue inside, dominating her mouth the same way he was the rest of her body. She felt her body loosen, and the place between her thighs grew damp.

Finn pulled his lips away from hers and trailed them down her neck. Jess let out a quiet moan as he nipped her at the point where her neck met her shoulder.

His free hand pulled at the tie of her sarong, and it fell unheeded to the floor in a puddle of pink. He cupped one breast in his hand, then bent and lightly bit her nipple through the white fabric of her bikini top, drawing a moan from her lips.

They both stilled as they heard the sound of the sliding glass door moving along its track. In a flash, she scooped up her sarong from the floor.

But before she could flee, Finn grasped Jess by the wrist and pulled her with him into the walk-in pantry, shutting the door behind him quietly. There was just enough room for the two of them to fit, and Finn was plastered to her back.

Jess faced the door, the kitchen just visible through the horizontal slits. Their breaths seemed louder than usual in the small room.

Aiden and his other two friends entered the kitchen, on the hunt for lunch. Jess watched Aiden walk to the fridge, just feet away from where they were hidden in the pantry, and open it. She could hear him asking his friends about their preferences in lunch meat and cheese. He took out several different items for the sandwiches— ham, turkey, salami, lettuce, tomatoes, and mayonnaise, laying them out on the counter. Their bread was on the counter next to the refrigerator. Then Aiden was walking over to the pantry, calling over his shoulder, "feel like chips?"

Jess froze. This was it. They were going to get caught.

She held her breath as Aiden reached for the knob.

"Dude, there's already some out over here."

At Brad's comment, Aiden paused with his hand on the pantry doorknob. "What kind?"

"Barbecue."

Aiden shrugged and released the handle, heading back to the other side of the kitchen, where Jason and Brad were already helping themselves to the bread and sandwich ingredients.

Jess released her breath, feeling lightheaded in relief.

Aiden, Brad, and Jason made their sandwiches and then took seats at the kitchen table, chatting about their summer plans. In the pantry, Jess was pressed against Finn, her back to his front. She figured she might as well take advantage of the time to be close to him. She leaned further into him, laying her head back on his chest. She could smell the coconut of the suntan lotion and underneath that, his own scent- a combination of bergamot and sandalwood.

She felt the bulge at her back at the same time his warm lips found the shell of her ear. His breath fanned over the delicate skin and Jess shuddered, heat spreading throughout her body.

Finn's hands came around her, covering both breasts and squeezing. Biting her lips to keep from making any sounds, Jess squirmed in Finn's embrace. Somehow, now that the imminent danger of Aiden finding them in the pantry was past and Finn's hands were on her body, she found that the idea of fooling around while her brother and his friends were mere feet away made her hot. REALLY fucking hot.

Moisture pooled between her legs in a warm rush as Finn pushed the triangles of her bikini top out of the way and stroked her hardened nipples. She squeezed her thighs together, rocking back into Finn's erection.

He moved one hand down to her bikini-clad pussy, palming it and massaging her through the fabric. She reached back to trace the outline of his thick cock, gripping him through the material of his board shorts. Finn released a ragged breath into her ear.

At the other end of the kitchen, the guys were finishing up their lunch. Jason was asking about Finn and where he'd gotten off to. "Dunno, but he's been kinda moody lately. Might've taken off," Aiden mused.

Finn pulled aside the crotch of Jess' bottoms and delved underneath into her soft wetness. His fingers found her clit and stroked it gently as she rubbed him over his swimsuit.

Then, they heard the heavy sliding door opened and closed, signaling that her brother and his friends had gone back out to the pool.

Growling, Finn whirled Jess around and pressed her back against the door. He dropped to his knees and pulled her bikini bottoms down, then spread her glistening pussy wide and dove in.

Jess threw her head back, breathy moans escaping as Finn worked her clit with his tongue. She thrust her fingers into his golden hair, arching into his face as he licked her.

Finn lifted one of her legs, throwing it over his shoulder to have better access to feast on her pussy. He drew her sensitive button into his mouth, sucking on it as he thrust two fingers into her tight channel. Jess cried out as she flew apart under his tongue and hands.

Finn stood, not releasing her leg, and ripped open his pants with one hand. He gripped her other thigh and hoisted her up, balancing her between his arms and the door. Jess gasped in surprise, then cried out as he impaled her on his fat cock. Finn's mouth moved over hers, swallowing her cries as he pounded into her, hard and rough.

She scored her nails down his back, marking him, not caring who might see.

The slats of the door cut into Jess's back as Finn pumped in and out of her pussy in a furious rhythm, but she was too far gone to even register then discomfort. Everything had gathered into an electric vortex at her core as she writhed on his thick cock.

"I can't hold back," Finn rasped. "Touch yourself. Come with me." She obediently reached down between their bodies and found her clit, rubbing it in rapid circles as he drove into her over and over. The extra stimulation pushed her over the edge. Jess shattered into a climax with a cry, and Finn gave an animalistic growl as he spurred thickly inside her.

Easing her down, Finn captured her mouth with his. "You drive me so fucking crazy."

Jess giggled, kissing him back, then pulling up her bikini bottom and tying her top. "This whole thing was insane. I mean, Aiden was right there!"

Finn shook his head. "I'm going to talk to him. I can't sneak around like this anymore."

"Right now?" There was surprise and hope in Jess' voice.

He nodded. "I'll ask him to talk with me inside, away from the guys."

Jess bit her lip. "Do you know what you are going to say?"

Finn was silent for a moment. "I'll tell him the truth. That I tried to fight my feelings for you, but they were too strong. That I want you to be my girlfriend. That I'd like his blessing... but I don't necessarily need it."

Jess' heart soared and a blinding smile broke out over her face. She wrapped her arms around Finn's neck and gave him a smacking kiss on the lips. "Thank you. I know it's not going to be easy."

His next words made her melt.

"You're worth it."

After sneaking out of the pantry, Jess went to her room while Finn went out to talk to Aiden. She'd asked if he wanted her there, but he'd said no, that he preferred to talk to him man to man. Jess rolled her eyes at that, but left him to handle the situation in the way he thought was best.

***

Aiden was floating on a blue raft in the pool, a beer in one hand, the other shading his eyes from the sun as he talked with Brad and Jason.

Finn's stomach felt like it was going to empty it's contents right there on the deck. He dreaded this conversation with his best friend from childhood, who he knew was protective of his sister- and trusted him so implicitly that he'd never bothered to warn Finn off as he did all the others that came sniffing around.

But he also was honest to his core, and hiding his feelings for Jess was just not possible. He wasn't sure which had bothered him more these past few days- the worry about them getting found out before he'd had the chance to figure out what to say to Aiden about it, or frustration that he had to cover up his and Jess' burgeoning relationship.