Two weeks later, at lunchtime, they lay together after a hard fuck.
"So your kink is watching lesbians?" She lay in his arms, her back up against him, his cock a soft lump against her ass.
"If that's a kink, yeah. More of a turn on, I think."
"And my ass."
"Your tits, too. And your face, your legs. All of you. But you said you don't do girls, and you won't let me put my finger in your ass."
"You came fucking close to that first time you fucked me. And I have...done girls."
"Sure, when you had a threesome, right?"
"Yeah, but," and she stopped. Her voice was low. "I have a twin sister."
Oh my God, he thought.
+++
It seemed like they'd gotten no sleep for two days, first celebrating their 18th birthday, then coming home from the senior prom so late, then up in the morning for the drive to the lake cabin. Emmy and her twin sister, Maya, pretended to complain, but it was half-hearted. They took the third row of seats, leaving the second to their brother Paul, a year older, who was looking forward to seeing the girl in the cabin next to theirs.
"Why are you so restless?" Maya asked.
"Nothing."
"Well, take a nap, then. You sure didn't sleep good last night."
"Fine. Neither did you."
But Emmy couldn't sleep. She kept thinking about Jimmy Flores. A football player, slow dancing with her! His shoulders were like rocks. He wasn't all grabby like other boys, but during the slow dances he pulled her close, and his hands rested on the upward curve of her ass, just high enough to keep Mr. Cosgrove from yelling at them. And she felt hardness pressing against her thigh. What was that about? She'd seen her brother naked, but not...erect?
It felt good just thinking about it.
She must have dozed off, because they were there all the sudden, two hours of driving just gone.
After helping mom and dad open the cabin and unpack, Paul went to find his girl, and the twins packed lunches and headed up the mountain behind their property. Half an hour up the hill, they turned off to a glade they'd stopped at often, spread out a ratty old blanket and pulled out their lunches, eating cross-legged in the shade.
"I danced with Jimmy Flores last night," Emmy said.
"Oh, my god, really? He seems so nice."
"He is. And a gentleman, he didn't try to feel me up or anything. But..."
"What about your butt?"
"Stop it. He had a hard-on."
"Well, of course he did." Maya put the last bite of her sandwich in her mouth, licking her fingers as she chewed. "I'd get a hard-on slow dancing with you."
Emmy laughed, which touched off laughter in her twin, as it always did. "I can't imagine you with a hard-on," she said.
"It could be interesting having a penis." Maya stared into space, as if trying to imagine it.
"Have you ever seen one?"
Maya looked sharply at her. "Sure, Paul's. I've walked in on him jerking off."
"No! And you didn't tell me? What did he do?"
"He made me promise not to say anything. He had some girl-girl porn on his computer. Tried to cover himself up and yelled at me."
"Was he big?"
"I don't know. I've never seen another one."
"Jimmy felt big. I think."
"Did he kiss you?"
"No. I wish he had." Emmy tried to imagine his lips against hers, and even his tongue in her mouth. "I don't think I'd know what to do. Paul was watching lesbian stuff?"
"Yeah, he was so interesting in covering up his boner he forgot to turn off his video."
"What were they doing?"
"I don't know. Rubbing each other between the legs. Licking each other down there, too. Kissing breasts and French kissing."
"You just watched it?"
"Better than watching Paul."
They sat in silence for a few minutes, listening to the birds and bugs. Emmy felt like there was a bug inside her, buzzing.
"What do you even do when you French kiss?" Emmy asked.
"You use your tongues on each other. You know that."
"But I've never done it. And neither have you."
"You want to?"
Emmy looked at her, mouth open in shock. "Kiss you? Kiss each other?"
"Why not? It's just a kiss. We can see what it feels like. It doesn't mean we're falling in love or anything."
"Like, practice?"
"Sure. And maybe it will calm you down a little." Maya scooted closer to her until her bare leg was under Emmy's bare leg. The girls looked at each other.
"This is weird," Emmy said.
"Yeah. If you don't want to --"
"No." She suddenly wanted to grab Maya's face in her hands. "I mean yes, I want to, I think."
It was Maya who put her hand on Emmy's cheek. It took a moment to sort out where their noses should go, then their lips touched.
Emmy pulled back. "Thought I heard something."
"No, you didn't." She put her mouth to Emmy's again, and her tongue probed lightly against Emmy's lips. Heart pounding, Emmy parted her lips, and their tongues touched.
It was like a jolt of electricity, coursing from her head to the secret spot between her thighs, and she wanted to rub herself, to be back at the dance last night, grinding herself against the hard thing in Jimmy Flores' pants.
Unsure of what to do, she placed one hand on her sister's bare leg and the other on her face, mirroring Maya's touch. It felt incredibly good, their mouths opening and closing, tongues touching, the wet kissing sounds among the birdsong. Emmy pushed Maya down, not breaking their kisses, one knee between Maya's legs, Maya's thigh rising between hers.
"You taste good," Maya said, and put her tongue deep in Emmy's mouth, exploring palette and teeth.
Tentatively, afraid she would go too far and ruin the moment, Emmy squeezed her thighs together. Maya raised her knee, bringing her leg up solidly against Emmy's vulva.
"God, I want to rub --" Emmy gasped.
"Yes."
Maya's arms were tight around her, but they loosened, and her hands were beneath Emmy's unbuttoned flannel shirt, warm on her sides through the thin fabric of her tee shirt. Emmy rocked her hips up and down. It took a moment to find the sweet spot. The sisters kissed again until Emmy came very suddenly, letting out a trilling moan. The orgasm seemed never-ending, just like her first one had.
And just as suddenly she rolled off of Maya, all the way over, her back to her sister, curled into a ball, her face hot and tears running from her eyes.
"Emmy? What's wrong?" Maya knelt over her, pulling her sister back against her.
"We shouldn't have done that." Emmy pulled away, but Maya wrapped her tight in her arms. "We're sisters. It's wrong."
"It's okay. I really think it is. We've always been each other's safe place, right? We're just exploring, right? We won't tell anyone."
Emmy looked up at her, her sight blurred by her tears. "You don't hate me?"
"Why would I hate you?"
"For doing this with each other. Incest."
"No. What we just did is our secret."
"What if we do more?"
"Like what?"
"Like what you saw in Paul's porno?"
"You want to do that?"
"I don't know. I don't know what you saw. I just...I want to rub myself against something, I want to touch bare skin and -- and that orgasm I just had felt incredible."
Maya looked down at her for a long time, and Emmy let her look, let her think, afraid she would say no, afraid she would say yes.
"It's not like we can get each other pregnant," Maya said at last. "We're just trying stuff out."
"We can make each other feel good."