[F] I lay on top of my nerdy friend to keep him warm…

So recently a big group of my friends decided it was time to touch grass, so we organized a camping trip, the idea being that we had one last trip together before winter sets in. That was the idea, anyway.

Turns out we're dumb as fuck because October is not a great time to go camping and even with the fire going, everyone was shivering. People started bailing early, including my tent buddy, Caitlin. I was annoyed but figured I'd at least have a cozy tent to myself, and in the end about six of us ended up sticking it out, and after we'd eaten and had a few drinks, we decided to call it night and go to sleep.

Cut to around midnight (only an hour after we'd all gone to bed) and I woke up to the sound of frantic shuffling and a muffled curse. I unzipped my tent to find one of the guys, Alex, standing there holding his tent's ripped canvas flaps.

"Shit, Alex," I said. "Are you okay?"

He nodded, but it wasn't very convincing. "Wind tore my tent to shreds," he mumbled, clearly embarrassed. I immediately felt awful for him; he's more of a gamer than an outdoorsman, and he tends to get nervous around girls, especially me. He's geeky, a little shy, and way more into fantasy novels and figure painting than real-life adventure. Everyone else was either sleeping soundly or had already packed up and left because of the cold.

I shifted over in my tent. "Grab your sleeping bag and climb in. It's too dark for you to go back now. Just… stay on your side, okay?"

"Thanks, Sarah," he said quietly, and I could see the relief in his eyes. He crawled in beside me, fumbling with his sleeping bag. Suddenly he looked more nervous than ever, trying to stay as far away from me as possible in the cramped space. I could tell from the way he was shivering that his bag wasn't warm enough. After a few minutes of lying stiffly side-by-side, I sighed.

"Alright, if we're going to make it through the night, we need to share body heat. Otherwise, we'll freeze." I unzipped my bag and opened it to him. "Just don't make this weird."

Alex's cheeks turned pink, and he looked about ready to crawl back out into the cold rather than get any closer. I followed his line of sight and looked down at my body - my tiny Mario pajamas tight around my huge tits, my nipples stretching the fabric in the sudden cold opening the bag. My shorts, too, barely covered my pussy. I smirked.

"C'mon Alex, I'm not going to bite."

"Uh… okay. If you're sure…"

"I'm not letting you freeze," I grumbled, rolling my eyes. "Now get over here."

He scooted closer and I threw my bag over both of us, sliding up to him and putting my arm round him.

"Holy shit Alex, you really are freezing."

He nodded, his teeth chattering slightly. "I stood outside for a long time. I didn't know what to do."

My heart broke for him. Poor Alex.

I decided right there and then I was going to take his night from the worst of his life to the best of his life.

"Well you can relax now," I smiled. "I'm going to look after you. Is that okay?"

"Oh, uh. Yeah, I guess."

"And is it okay if I mount you?"

"I–if you–?"

I didn't wait for the rest. Instead I pulled my sleeping bag up around me and swung my leg over his hips, my breasts bouncing and swaying within the T-shirt as I did so. I moved up just enough so that I was straddling his waist, my chest pressing lightly against his face as I leaned over him. The look in his eyes was priceless—wide-eyed, almost panicked, like he couldn't believe what was happening.

"S-Sarah," he stammered, his hands twitching awkwardly at his sides, clearly unsure of where to place them. His cheeks were redder than ever, and I could feel his breath, warm and shallow, against my collarbone.

"What? Just trying to get comfy," I murmured, feigning innocence, even as I pressed down just a little more, feeling his body respond. His eyes flickered from my face down to my chest, where my thin pajama top was barely doing anything to cover me in the cold. I watched his gaze linger on my nipples, pressing through the fabric, and his blush deepened.

I felt a spark of excitement at the effect I was having on him. I was just messing around, but seeing him so flustered, so adorably awkward, was thrilling. I shifted my weight slightly, letting my hips sink a little deeper into his lap, and that's when I felt it—he was hard.

The realization sent a jolt through me, and I couldn't help but grin. I arched an eyebrow at him, watching as he tried desperately to keep his cool, his hands now gripping the sleeping bag so tightly his knuckles were turning white.

"Is something wrong, Alex?" I teased, licking my lips involuntarily. I was having too much fun.

He tried to speak, but all that came out was a nervous chuckle. "N-no, just… trying to stay warm."

"Mhm," I murmured, leaning forward so that my chest was even closer to his face. "You're doing a good job, then," I whispered, my voice soft but dripping with implication. My pussy lips were now either side of his cock, and it was all I could do to not pull my shorts to the side and start to ride him.

I held him like that for a few moments longer and finally his hands found their way, moving up slowly to rest on my waist. I could tell he was being careful, as if he wasn't sure if he should touch me. It made me want to push him further.

I shifted again, rolling my hips just slightly, feeling him harden even more beneath me. His hands tightened on my waist, and his lips parted, his breath coming out in shallow, ragged gasps. "Sarah… are you sure…?" he whispered, his voice shaky, almost pleading.

"Sure about what?" I asked. "We're just two friends, keeping each other warm."

I rolled my hips again. Alex gasped, and another thrill shot through me as I watched him give in, his nervous energy shifting as he became more certain, his hands resting firmly on my hips. He looked up at me, eyes hazy, lips parted as if he were about to say something, but then he hesitated. Instead, he moved his hands around my waist and gripped my large, soft ass cheeks. Firmly.

"Alex!" I said, stopping my gentle gyrations on his cock. "What the fuck?!"

Alex looked terrified for a moment and I grinned.

This was going to be fun.