05

Part Two

I was speechless.

Natalie did not just say that. It was so direct, so unexpected, and so wrong. I half expected her to break character and play it off as a joke, or perhaps this was a test and Jessica wanted to see how faithful I'd be in a situation like this. Either way, I'd only look bad if I waited for either of those outcomes to resolve. If she was kidding, and took my stunned expression the wrong way, I'd look pretty bad. If Jessica was watching and interpreted my lack of escape as something else entirely... Well, that would be way worse.

"Umm, Natalie?" I finally said. At the same time, I carefully took her wrist and guided her hand off my chest. Normally, I'd back up, but I was pinned enough as it was between her and the door. Short of squirming off to the side, or trying to gently push her back without making any inappropriate contact, I was stuck. "Not funny."

She just cocked her head to the side. "I wasn't trying to be funny. You and I are going to sleep together this weekend."

What was with this girl?

I had no idea how to handle her attitude. She wasn't being overconfident, or smug, or anything like that. It was more like the decision had already been made; that it was fact, not fantasy. No girl had ever been this straightforward with me, which made it all the more surreal.

"Umm, no we're not," I replied, forcing a light chuckle. Admittedly, Natalie was cute, but I'm not like that. Cheating fantasies may sound fun in theory, but there's no way in hell that I'd actually do that to a girlfriend. Least of all, with her own sister. "Let's go inside, okay?" While I had no intention of betraying Jessica, the situation was already making me nervous. Why did the two of us take so long? What did we talk about? I was already trapped in a position where I'd have to lie to my girlfriend about a thing or two, or at least omit. Based on how she talked about Natalie, I doubt she would believe a word I said about the girl's advances.

"Why not?" she asked, with a pout, "It's not like Jess has to know. You're saying I'm not attractive?"

Speaking of traps...

It was a totally unfair question. Not just for the normal reason, where there really isn't a good answer when you're dating someone else and/or not interested in them. The bonus difficulty lay in that Natalie was basically a mini Jessica. Not in personality, as I already learned, but they shared a number of physical qualities that I was attracted to. The cliché answer would be that she's attractive, but I'm not attracted to her, except even that wasn't objectively true. In another life, this would all be pretty hot. IF I wasn't already dating Jessica.

"I'm not saying anything," I said. Better to avoid playing along. Not wanting to give her another opening, I turned and opened the door, ignoring what I'm pretty sure was her chest nudging my arm from our proximity. Heading right inside, I called out to Jessica as yet another way to separate myself from Natalie before she tried to further tempt me. "Natalie's here!" I exclaimed, as if she didn't already know that, "Where should I put her things?"

To my relief, Jessica was right around the corner. No more opportunities for Natalie to mess with me. I still genuinely didn't know if she was teasing or actually being serious. "Across from us," Jessica said, "That's her room."

Right. I had already been given the tour. Both sisters got the corner rooms upstairs with a good view of the lake, while their parents used the master bedroom on the main floor. Then guests could take any other room in the sizable house.

"You got it," I said. Hopefully she didn't notice that I was the slightest bit flustered from everything outside.

"Natalie!" she exclaimed. Jessica pushed past me and flung her arms around her sister.

Rather than stick around for the greetings, I used the distraction of my girlfriend to slip away and take Natalie's things upstairs. Better to get it done when she didn't have a chance to follow me up and start flirting again. I knew this weekend was going to be less relaxing with a third wheel around, but never considered that Jessica's sister was going to be such a handful. Just a few minutes with the girl, and I was already trying to figure out how I'd manage to avoid any one on one time with her.

Once I was alone upstairs, I started thinking a little more clearly. In retrospect, maybe Natalie didn't mean any of it. She could just be a total flirt, or that could be her style of humor. Seriously, what kind of girl just walks up to a guy and says she wants to bang? Especially to her sister's boyfriend? Concluding that she didn't mean any of it, I set her bags outside her door and made my way down towards the voices in the kitchen.

The moment I turned the corner, Natalie bounded over and hooked her arm into mine. "Seriously, sis. He's hot. How'd you manage to land a guy like this three seconds after starting college?"

Jessica just scoffed. "It wasn't three seconds, Nat. And right place, right time, I guess."

I could tell right away that Jessica didn't suspect anything, nor was she bothered in any way about the physical contact as Natalie and I faced her arm in arm. It only confirmed my theory; that Natalie was friendly, flirty, touchy, whatever.

"Lucky you," Natalie sighed. She slipped her arm out of mine as effortlessly as she linked us a few seconds ago. Placing that hand on her hip, she glanced from me to Jessica. "So? What's the plan? Please tell me we're hitting the lake. My legs can't take much more sitting today!"

"Oh, poor you," Jessica teased, "And what do you think, babe? I've been dying to try out my new bikini."

It was her way of trying to make up for Natalie's arrival and the interruption of what could have been a good time. While Jessica and I still couldn't do anything like that with her sister around, she could at least show off her body by the lake. The proposal was innocent enough with Natalie standing right there, but I knew what she meant.

"Yeah, sounds fun," I said, "Should I grab anything for us?"

"Sunscreen, towels, drinks..." Jessica said, pausing to think, "Snacks, maybe?"

Without missing a beat, Natalie piped up with a warm smile. "I can help!"

It didn't take long for her to point out that I wouldn't know where to find everything. This was my first time at their lake house, after all. Jessica was appreciative of the gesture, and happy to get changed while her sister and I grabbed a few things to bring down to the dock. I, on the other hand, was a little more wary.

For good reason, too.

The moment it was just Natalie and I in the kitchen, she stepped back over and took my hand. Her fingers intertwined with mine and she looked up at me with an innocent smile. "Come on, babe," she said, "I'll show you around."

Part Three

I didn't know what to do.

The whole point of this vacation was so that I could meet Jessica's family, and that included Natalie. They were clearly close as sisters, and I couldn't have my girlfriend's younger sister dislike me. If I yanked my hand away, she might get offended or upset. But if I kept holding her hand, it might encourage her to keep being touchy. She was cute, sure, and the gesture was innocent enough, but it still felt wrong doing something like that when it was behind Jessica's back.

I guess there wasn't a problem when Natalie hooked her arm in mine in the kitchen when we were all in there. Was this more of the same? Or had the younger girl intentionally waited until Jessica was out of sight before attaching herself to me? We had only just met, and I still couldn't get a read on her.

"Thanks, babe," I said, testing the waters. How would she react?

Apparently with a smile and a wink. "I knew you had a thing for me." She gave my hand a squeeze and stopped by the door at the edge of the kitchen. "Do you think Jessica trusts us, all alone in the garage? It's so dark, and private, and perfect for sneaking around."

"Natalie..." I muttered, feeling myself flush a bit at her words. Was she serious?

"That's my name," she giggled, "Don't worry, babe. Our first kiss will be somewhere a lot more exciting than a dusty old garage. Maybe on the boat? Or in the lake? I look pretty hot in a bikini! Maybe even hotter than Jessica. You'll have to compare once we're both changed."

My eyes instantly scanned the kitchen and hallway beyond for any trace of Jessica. What if she heard this? They were Natalie's words, but I could easily take some blame for how close we were standing, how we were holding hands while she talked about kissing me and alluding to how I'd be checking her out later.

As if reading my mind, Natalie just rolled her eyes. "Jessica is upstairs. She can't hear us, don't worry. Where do you want to make-out with me?"

"Nowhere!" I exclaimed, quickly lowering my voice, "Natalie, this isn't funny."

"We went over this already. I'm not trying to be funny. You're saying you don't want to kiss me? Not even a little peck?"

"No. I don't."

"Liar." With another pout, she let go of my hand and stepped away. "If you're going to be boring, then go grab the cooler from the garage. I'll be right here, waiting for you to come back and change your mind. Because, let's face it. I'm a catch, and I'm an amazing kisser. Jessica doesn't have to know, promise!"

Oh God, was she serious? If this was only supposed to be teasing, or a sick joke, Natalie was pushing things pretty far without breaking into a smile and letting me off the hook. The worst part was, her flirting was working on some level. I could imagine her, a mini version of Jessica, wearing a bikini simply due to how she planted the image. And, with her lips pursed in a cute pout while talking about kissing, I couldn't stay away from that visual as well. Heading into the garage without her suddenly seemed like a very good idea.

"Enough, Natalie." Before she could come up with another flirty response, I opened the door and retreated into the garage. All I could hear before I closed the door behind me was a light giggle.

Letting out a relieved exhale from the solitude, I began looking around for the cooler. Despite my protests around Natalie, it was impossible to ignore everything she had done. Her ass in my face while she bent over to deal with her things in the car, her hand on my chest as she glanced up with those flirty eyes, and all those things about how I was hot; how she planned on kissing me, fucking me.

In a matter of seconds, I felt a faint twitch between my legs.

Fuck.

I immediately began thinking of literally anything to make the brief wave of horniness go away. Thankfully, Natalie had sent me in here alone. What if she caught the effect she was having on me, and only after a few minutes of meeting her? I'm a guy; I can't help it. A cute girl, flaunting herself and being so direct. A younger, more flirty version of my girlfriend, at that. My body was telling me what I subconsciously appreciated about the girl, but I needed to shut that down. More importantly, I needed to avoid any more alone time with Natalie.

After taking a few seconds to get myself back to normal, I resumed my search. The garage wasn't that big, and the red cooler was pretty easy to spot since we had all parked outside. I was tempted to wait a few minutes before going back into the kitchen, so Jessica would have time to make it back downstairs, but that would potentially give Natalie an excuse to come out and help if I was taking too long.

Choosing the lesser of two evils, I grabbed the cooler and took it inside. And regretted it immediately.

Natalie was standing in the middle of the kitchen, almost completely topless. Her crop top and bra were sitting on the island in plain sight, and she was using both hands to hold the cups of a light pink bikini against her breasts. All four strings of the top were loose, and she was looking at me with a coy smile.

"Oh, hey," she said, "You were faster than I thought. I hope that's not true about all the things you do."

"Natalie!" I exclaimed. Averting my gaze immediately, in case she decided to lower the bikini top and get me in some real trouble with Jessica by flashing me and giving me a sight I'd have to forever avoid telling my girlfriend about, I took half a step back too. Maybe it wasn't too late to go back into the garage and let her finish changing in the middle of the kitchen. Because that's a normal thing to do.

"Good timing, actually. Can you tie these for me?" Natalie said, with another one of her little giggles, "You know, before Jessica comes down and gets the wrong idea?"

Part Four

The wrong idea, indeed.

Natalie was nearly topless. If she lowered her hands or even adjusted her grip on the bikini top, there was a good chance I was going to see her boobs. It was beyond confusing. Under normal circumstances, this would be incredibly hot. An attractive girl, walking the perfect balance of coy and sexy; not to mention the perfect balance of dressed and undressed. There was so much smooth, fair skin on display. Her jean shorts and untied pink top didn't leave much to the imagination, yet still covered what mattered most.

"Natalie-" I began. What should I even say? Tying the strings for her like she wanted was the best way to keep the bikini top in place, but that could be yet another trap.

"Yes?"

"Just- cut this out, okay?

"Cut what out?" Natalie asked, with a small pout, "I'm just trying to get to know my big sister's boyfriend. But if you don't want to help me, maybe

I

should help

you

instead..." Little by little, she began lowering her bikini top. Each second felt like an eternity as I watched, unable to take my eyes off her breasts that were becoming more and more bared to me. The rational, faithful part of my mind knew that I should look away. But it's difficult to think properly when an attractive girl is moments away from being topless in front of you.

She stopped just shy of exposing her nipples. A lucky break for me; or, more likely, a tease by her. I finally managed to tear my eyes away, going so far as to slightly shift my body towards an empty side of the room, but she definitely would have already noticed my staring.

"What? It's harmless if you don't go too far." Natalie sauntered over to me, only stopping once she had circled around to stand right in front of me. Her bikini top was back to where it had started, though the way she was holding her smaller breasts created a bit of cleavage that was difficult to ignore when looking down at her. "Eyes up here, babe," she said, immediately catching me, "Now, would you like to kiss me? Or would you rather tie me up?"

God, this was going to be a tough weekend.

Any hopes that Natalie was joking around were all but dashed at this point. I knew a handful of innocently flirty girls, but this was something else entirely. I'm pretty sure the petite girl in front of me would wholeheartedly make out with me right now if I gave her the chance. And, though I knew what she actually meant, the phrase 'tie me up' sparked a totally different image with the way she said it.

But I couldn't. Horny or not, this was Jessica's

sister

. Not only was that the most taboo form of cheating, but the fallout was absolutely not worth it, no matter the temptation. I would have to keep it from Jessica, forever, and also deal with Natalie's knowing looks every single time there was a family trip like this. "I'm not kissing you, Natalie," I said. Apparently it didn't sink in enough the first time.

"Well, of course you're not. Pretty sure I'd know if we were kissing; you know, with your lips on mine and all," she winked, "Come on, just a peck? I promise you won't regret it!"

Unlikely. "No. But I'll tie your bikini top for you, okay?" Sooner rather than later, hopefully. Anything to get her flirty gaze and partially exposed boobs out of my face.

"Okay, fine," she huffed, "We'll make out later, then."

With that, Natalie turned to face the opposite direction. I decided to not dignify her presumptuous words with a response. It wasn't worth it. This girl had a way of turning every single thing I said against me.

For a moment, I just took in her bare back as I waited to be handed the strings. While there was nothing particularly wrong with looking at this particular part of another girl, I still felt guilty for appreciating how soft and smooth her back and shoulders looked. And, even worse, I couldn't help but briefly imagine a topless Natalie as I saw nothing but bare skin above her waist.

"Oops!" Natalie's voice snapped me out of my momentarily distracted thoughts. "Sorry, babe. One sec."

It took me a second to figure out what she was talking about. With her body in the way, I didn't notice at first that she had 'accidentally' dropped her bikini top. But when Natalie used both of her now empty hands to brush her hair back, I realized that she was now standing fully topless in the kitchen.

Before I could even process that I was now dealing with a half naked girl standing just a foot or two in front of me, Natalie went to retrieve her top. There was a reason she adjusted her hair. Just like that, she bent all the way over. Pert rear jutting out; jean shorts hugging her even more tightly than usual. The unexpected motion brought her inches from connecting with my crotch, and I was back to inappropriately staring.

"You do know I'm eighteen, right?" Talking from her new position, Natalie turned to glance over her shoulder.

Fucking tease.

Good to know she's legal. I was definitely more hung up on the fact that she was Jessica's sister, but there would be yet another layer of wrongness to all of this if Natalie was a high school senior with a later birthday. She'd probably be acting exactly the same, but there would be a lot more potential trouble for me. Either way, this was still wrong for the main reason: I have a

girlfriend

.

"Natalie-"

"Mm hmm?"

How do you even talk to a girl who turns everything into a sexy invitation? I was trying to come up with a potentially safe reply, taking a small step backwards just in case, when I heard the worst--

Jessica's footsteps on the stairs.

Part Five

What was I supposed to do?

My girlfriend was about to walk into the kitchen, and her younger sister was topless and just a few inches away from me. I hadn't even done anything wrong, despite the overt temptations Natalie kept throwing my way, but it would certainly look that way even if I was innocent.

Thankfully, Natalie was better under pressure than I was. "Quick, tie me up!" Snapping back up to her feet, she muttered the directive while hugging the pink bikini top to her chest with one arm. With her free hand, she tossed each string over her shoulder.

"Umm, right." It made sense, didn't it? Better to help than for Jessica to walk in and jump to conclusions.

I fumbled to grab the pink strings. Natalie's hair was still pulled forward over her right shoulder, so I had easy access to make a quick knot over her neck. In my haste, I was definitely worried that I potentially did something wrong, but there wasn't time to dwell on it. Instead, I let the girl pass me the lower strings one by one, and I did a similar maneuver below. Under normal circumstances, I might have appreciated brushing against the smoothness of her back, but I had more pressing things on my mind.

We weren't a second too late, as Jessica turned the corner just as Natalie stepped away in her now tied bikini top and grabbed her glass of water from the counter. "Hey, sis!" she exclaimed. Quite the little actress. Nothing in her tone gave away everything that transpired over the last few minutes, and I was actually a little grateful she was drawing attention away from me for a moment. I was more skeptical about my own ability to play it cool. "And damn, girl! Someone's a lucky guy."