Louis didn't say anything and instead just fidgeted beneath him in a way that wasn't helping anything. He could see that he was chewing on his lip like he did when he couldn't work something out and curiosity got the better of him.

"What are you thinking about?" Louis licked his lips briefly before answering.

"Tan lines." Harry gulped. He could see where this was going and he wasn't sure his threadbare sanity could take it. "Oh, yeah?"

"Yeah," Louis whispered. "I mean, it's not like I walk around naked all the time like you, but still if my jeans are a little low then it might be obvious. It'd look a bit tacky, wouldn't it?"

Harry found himself nodding until he realised Louis probably couldn't see. "Y-yeah, I suppose so. So, urm, what did you want me to do?"

Louis squirmed beneath him again before answering. "I guess you could, urm, pull my shorts and stuff down a little bit. It's not like you haven't seen my arse before, right?"

Harry could tell he was trying to sound light-hearted, but his voice was quivering nervously like it did when he couldn't quite hit the note. His own hands were trembling slightly and the only thought in his mind was to put them to better use.

"Yeah, I guess I could do that." he mumbled.

He felt Louis relax underneath him, making him realize how tense his body had been when he asked, and he shuffled a little further down so he was straddling his thighs.

He rested his fingers at the waistband of Louis' shorts, making certain that Louis was sure this wouldn't cross the line. When he made no sound, Harry pulled them down with his boxers over the curve of Louis' arse. He bit his lip at the proximity, even more so when Louis lifted it up toward him so the shorts didn't catch around his front. He smiled slightly as he thought of the thousands of girls who would kill to be him right now.

He didn't give himself too long to stare and busied himself hurriedly with squeezing more lotion onto his hands. There seemed no other way than to just place one palm on each cheek and if it were any other two people in the situation he would have found it amusing. As the case was, it wasn't anyone else, it was Harry and Louis. Just like always.

Taking a deep breath, he lowered his hands onto Louis' arse and screwed his eyes shut. There was no way he could watch this when the feeling was already so overbearing. The cheeks were soft but firm and he felt them dimple under his touch. He let his thumbs rub into the creases where they met his thighs and slid them up and over until they reached the small indents at the bottom of his back.

He could feel the peach fuzz on Louis' skin, but it was so soft that it added no friction and only helped his hands glide easier as they moved back over the supple cheeks. Louis truly had a fantastic arse.

He channeled his appreciation by massaging a little harder and was spurred on by Louis' soft moan.

The only problem was that the more he groped, the more his erection grew, so he shifted atop of Louis' thighs to try and do some hands-free rearranging.

His eyes still closed, he didn't notice his hands slipping a little closer together until one of his fingers dipped completely and rested in the crevice between the cheeks.

He could feel Louis tense and he mirrored it as all his muscles froze. He wanted to move his hand and laugh it off, but the way Louis hadn't leapt up in outrage kept it where it was.

He opened his eyes to see Louis' face turned to the side, but his eyes were closed and his teeth were biting into his lip again, only in a different way. It looked more like he was trying to hold something in and Harry knew the feeling. He looked down at his hands, narrowing in on the finger that lay in the crevice and one thought came to mind. He needed more lotion.

He used his other hand to flip open the bottle and squirt some of the stuff right down the middle of Louis' arse, effectively filling the cleft. He felt the shiver than ran through his friend as the cool lotion settled and experimentally began to move his finger up and down between the cheeks.

It glided easily, but he didn't let it nestle too deep no matter how much he wanted to. Louis was fidgeting more now and his lip had turned white where his teeth were digging in, but he still wasn't telling Harry to stop.

He replaced his other hand on the left cheek, rubbing whatever lotion was left there into the skin soothingly, just in case there was some part of this Louis was nervous about.

The moan came out a little louder this time, like it had been building for a while and suddenly the fabric he was sitting on started to irritate him.

He removed both of his hands, his stomach fluttering when Louis made a small sound of loss. He asked without words, tugging gently at the waistband of his shorts where it lay against his thighs. He caught the slight nod of Louis' head and lifted himself up a little to be able to push the shorts and his underwear down enough for Louis to toe them off.

He settled back down on Louis' bare thighs, feeling the warmth of his skin through his own clothes and trying not to think too much about the fact that Louis was naked beneath him else he was sure to come in his pants.

"Carry on, Haz." It was a whisper that he almost didn't hear, but the anxious determination was something he couldn't miss.

"Are you sure?" he asked, his own voice quieter than usual.

"Yeah. Yeah, I'm very sure." Louis sounded more confident now and he turned his head to look at Harry. His face was flushed and his eyes were heavy-lidded as they trailed down Harry's bare chest.

"I can tell you're enjoying it too, so don't stop now." he added, his gaze resting on Harry's groin. "And, urm, don't be scared to go a bit... lower."

"What do you mean?"

Louis grinned cheekily at him and winked. "I think you know."

Harry stared at him. He daren't let himself believe what Louis was implying. It made his heart swell because Louis trusted him enough to do something so... intimate. On top of that, it made his cock throb to think of actually being inside Louis, to have something planted between the cheeks that drew his attention far more often than not. There was something else though.