I sent my other hand up her shirt for backup. She pressed her chest against my palms as I cupped her tits and felt her up.
She bumped my cock a few times as she squirmed around in my lap. At first, she didn’t seem to realize what she was hitting. Once she did, she let her thigh deliberately grind on my erection.
Part of me protested the sudden eruption of a make out session with my sister. The pulses of shame and guilt, and the fear that I was making a huge mistake kept me wary, but I didn’t stop. Couldn’t stop, really. Kylie felt good. So very, very good.
I was horny. That suppressed a lot of my potential negative reaction. The way Kylie was grinding on my cock ensured that I couldn’t throw her off even if I wanted to, which I didn’t. Not really.
Kylie pulled away, then self-consciously wiped at her mouth where our shared spit had left a bit of a mess. Her eyes were bright and excited, but also scared.
“Ty…” she said.
“Yeah?”
“I… I don’t…”
There was a tremble to her lips, and when I moved my hand over her heart, I felt it pounding away like crazy. I was anxious and unsure about what we were doing, but she was even worse.
“It’s ok,” I said. “We can stop.”
“I don’t want to stop. But I don’t know…”
I pulled Kylie close to me, hugging her tight. She nestled against me, her cheek pressed to mine. I brushed her hair back and kissed her neck ever-so-softly, a repeated staccato of lips on warm, sensitive skin.
“I want you to stay,” she said in a small and far away voice. “Please stay.”
Another kiss, close to her ear. “I wasn’t going anywhere.”
“For the night, I mean.”
“I knew what you meant.” My fingertips ran up and down her spine, dancing lightly over her shirt. “I don’t have work tomorrow.”
“I know. That’s why…”
Aha. So there’d been more planning to this than I realized. More thought than I’d given my sister credit for.
“That’s why you picked today,” I finished for her. “Because you knew.”
She bit her lip and grinned sheepishly. “Maybe.”
I kissed her on the nose. “Fine. Then you can have me for the night.”
Kylie shifted and her butt pressed against my ever-hard cock, making me groan.
“Good,” she said.
****
There was some more making out, some more fondling and exploring, but things didn’t get any more out of control than that. I think we were both happier not pushing.
Kylie and I were going to share her bed for the night. Neither of us said it out loud or asked the question, but it wasn’t really necessary. It was the only place to sleep in her apartment, really, especially since she didn’t have any extra blankets or sleeping bags or anything.
I had to jerk off before bed or I knew I’d never sleep. Kylie wanted to ask, or watch, or help, or… something. I could see it in her expression. But she didn’t quite dare, and I didn’t bring it up. I just slipped off to the bathroom to do what needed to be done.
I stripped to my boxers for bed. Usually I didn’t even wear that much, but getting naked would have been awkward, even considering what had already transpired.
Kylie wore a shirt and panties, similar to what she’d already been in, except she swapped out her shirt for a light camisole. It showed some cleavage, but wasn’t an overtly sexy choice other than that. She still wore the sexy new panties, but I didn’t think there was any seduction planned there. She’d just already been wearing them, was all.