It wasn't always like this, Peter thought.
Nathan usually was perfectly composed, even when they were kissing he seemed to control every part of his and Peter's body, like pulling strings on his neat puppets stage.
Now it was different for some reason; his brother behaved with desperate, hungry movements which attempted to break Peter's self-control; after all, making out in their bedroom in the middle of the day was always risky and demanded to be as quiet as possible.
"H-hey--," Peter moaned and tried to move, but Nathan held him close.
"Shut up, Peter," Nathan murmured in his ear. "Just shut up."
Peter did so. He bit his tongue while Nathan touched him like that, with their clothes on, and he did his best in order of not throwing everything from Nathan's desk.
He wasn't sure how he had ended up there, pressed between the books and Nathan, but didn't complain much. Instead he parted more his legs, let Nathan press their crotches closer and Peter gasped for breath, trembling slightly. He pulled his brother with his free arm (the other one was trying to keep him on the desk) until they were face to face, and kissed him as desperately as Nathan was touching him.
Last time they had make out was after Nathan broke out with his former girlfriend, nine months ago, because his brother never touched him if he was in a relationship with someone else. Yet he didn't care if Peter had a girlfriend or not, or if Peter didn't want to, or if Peter-- whatever. It was always about Nathan, and Peter always let him, like this time and like nine months ago and like many more since he turned fourteen.
Peter wasn't an idiot (dumb maybe, though not an idiot); he knew that Nathan was controlling him, and over-powering him, and abusing him; and even though he knew they were committing something awfully wrong, Peter loved his brother and never turned him down.
Peter never asked him why. Peter didn't want to know. Peter wanted to believe Nathan was doing him because he loved him back.
Nathan touched with cold fingers under his shirt, on his back, stroking his body and Nathan bit his shoulder. He listened to a deep moan clearly, because almost all of the usual poise of his brother was gone. Sometimes he whispered his name under his breath and that sound made Peter shivered all over, and loved it, he loved how his name sounded coming from Nathan's mouth.
His brother always came first for some reason, but this time it didn't happen, and Nathan started to undone Peter's pants instead. His hands were hot now and sticky, but Peter was more occupied with not moaning or screaming too much to care.
He came without much noise, because Nathan kissed him just in time.
It was his brother's hug which made him stay put, because he was sure all the bones within his body were made of jelly now and no way in hell he'd be able to remain sitting down by himself.
Nathan came just after Peter touched his cock and his legs failed him; thus, both of them ended up unceremoniously on the floor. Peter smiled a bit, but Nathan didn't.
"Move, idiot," Nathan said with a whisper. "Someone may come in with all the damn noise you made."
"You're the only idiot here," Peter whined. "Who came and almost passed away? Not me."
Nathan breathed. "Move now, will you? We're done."
"Changing the subject, uh? Have it your way, brother," Peter said, pulling himself on his feet again. "I know you love me."
"You're my brother, I do love you," Nathan said.
Peter didn't say anything, just kissed Nathan one more time, hard and passionately, before going to their bathroom and clean himself.
Yeah, Nathan wasn't always like that; any other time, he would have denied the word 'love' applied to them.