Sam had forgotten just how good this felt. His brother's lips were soft and warm against his. The stubble on Dean's chin scratched his face as he moved closer. The sensation was familiar even after so much time, and Sam was amazed at just how comforting he found it. Slowly, he shifted onto his left side to face Dean, letting his right arm fall casually over his brother's waist.
Dean shifted a bit closer and flicked his tongue into Sam's mouth.
Sam found the bottom of Dean's shirt and slid his fingers inside, pressing his hand into his brother's back to pull him closer. He broke away from Dean's lips to nibble at his jawbone, and Dean responded by rolling his hips against Sam's.
"God, I've missed you," Sam sighed into Dean's neck, trembling slightly.
"I know," Dean answered, taking off his shirt as he rolled forward so that he was on top of Sam, who was now lying flat on his back. He rolled his hips against Sam's again. Sam arched his back and lifted his chin in response, allowing Dean to draw a line of kisses down his neck and bite his collarbone.
"Oh, God, Dean, I need you," Sam moaned.
Dean ran his left hand down the side of Sam's body, stopping when he reached his boxer shorts. "Say that again," he ordered.
"I need you," Sam repeated breathlessly.
Dean pulled Sam's boxers off and rested his hand on the front of his brother's hip. "Again," he commanded.
"I need you." Sam's heart was racing. His whole body was trembling with desire. Every bit of contact sent a jolt of pleasure up his spine, but it wasn't enough. He needed more. He needed Dean.
Dean obliged, moving his hand to slowly stroke Sam's shaft. Sam arched his back again and threw his head back and moaned. Dean leaned over his brother, resting his free arm on Sam's shoulder to pin him, and growled into his ear, "Say it again."
"I need you," Sam panted. Dean nibbled Sam's earlobe and rolled his hips forward. "Oh, God, Dean. I need you so bad. Please."
The arm attached to the shoulder Dean had pinned lay against the bed, fingers grabbing at the sheets, while the other tried desperately to pull Dean's body closer. But Dean held himself a few inches above his brother, keeping careful control of his movements. When he rolled his hips forward again, Sam's whole body tensed: his hips bucked forward, his back arched, and his fingers dug into Dean's skin.
Dean bit his lower lip to avoid crying out. "What was that, Sammy? Didn't quite catch it."
"I need you," Sam repeated, voice shaking. "Ohh, please. Please, Dean. I need you." Between Dean's hand still stroking his shaft, Dean's weight pressing him into the mattress, and Dean's hot breath on his neck, Sam was having a hard time focusing on forming sentences. He felt as though he was babbling incoherently, but every time he said "I need you" Dean rolled his hips forward again, sending a jolt of pleasure through Sam's body.
Dean stood up suddenly, taking Sam by surprise.
"Stay there," Dean told him, pulling off his own boxers (which Sam had completely forgotten he was still wearing). "I'm just finding some lube."
Sam was satisfied with this explanation, of course, but still found the thirty seconds it took Dean to return to bed far too long. When Dean returned to his place between Sam's legs, Sam sat up and threw his right arm around his brother, pulling him in for a kiss. With his left hand, he took the lube. With a bit of difficulty he managed to open it, squeeze some into his hand, reseal the bottle, and toss it aside. He rubbed his fingers into his palm a few times to warm it up, then started stroking Dean's shaft. He heard Dean inhale sharply.
Sam spread his legs a bit wider and moved closer. "I need you," he breathed into Dean's ear. "Please, Dean, I need you now."
Finally, Dean gave up on self-control. He hooked his arms under Sam's knees and lifted them to his shoulders, throwing Sam's upper body down into the mattress in the process. Slowly, he leaned forward and slid inside his brother, taking his time since he hadn't used his fingers beforehand and didn't want to hurt Sam.
Sam wasn't in the mood to take it slow, though. After how much time Dean had spent teasing him and making him beg, he was ready. He flexed his legs against Dean's shoulders to pull himself closer and moaned, "More, Dean."
Dean obliged, pumping deeper and picking up the pace, sending waves of pleasure through Sam's body.
"God, Sammy," Dean panted, "You don't know how hot you look right now. Love the way your body trembles. Love the way your hair sticks to your face. Love that shape your mouth makes when you moan."
The left side of Sam's mouth managed a bit of a smile for a moment. Then Dean jerked his hips upward and Sam opened his mouth wide for a loud moan. He felt Dean wrap his hand around his shaft again and start stroking, keeping pace with his hips.
Sam was moaning, licking his lips, biting his lower lip. Moaning, licking his lips, biting his lower lip. His hips were jerking involuntarily. His eyes kept rolling back into his head. Dean started circling his thumb in the precum at the head of Sam's cock.
"Dean," he panted, "Dean, that's so good."
Dean thrusted deeper and brought his hand to the base of Sam's cock, bringing it back up as he pulled back again.
"Oh, God, Dean," Sam moaned. His body was trembling with pleasure and aching for more. When Dean repeated this motion, Sam came. Waves of pleasure shook his body as he arched his back and let eyes roll back into his head.
When he recovered, he saw that Dean had finished as well. His face was flushed. Beads of sweat clung to his forehead. His pupils were so wide Sam could barely see the green in his eyes.
Dean leaned over to kiss Sam once, then rolled aside to fall back onto the mattress. Sam nuzzled his face into Dean's neck, and together they slept.