It was a strange feeling. The first time Kevin had ever really felt it, if he was being honest. But something about seeing Sam that night made it grow so much stronger. Lust.
Their living situations were generally pretty intimate, but this night they felt closer than ever. On top of that, Sam seemed to be really fond of walking around without a shirt on. Part of Kevin was very grateful for that, but part of him may have been a little frustrated having to sneak off to the bathroom every single time he caught a glimpse of Sam's beautiful body.
As much as he tried to deny it, Sam was definitely catching on. He saw the way Kevin's face went red as he stared for just a little too long and he heard the hot and heavy noises he made when he ran away just a little too slow. And it really turned him on. He didn't want it to turn him on, he really didn't. He saw the way Dean practically treated him like a son. It made him feel so wrong. But hell did it feel right. He grew fonder and fonder of walking around shirtless. That son of a bitch, Sam.
One day he sat a little too close. Kevin was sitting on the couch, minding his own business as he tried to translate the word of God. You know, casually. Sam just had to plop down right next to him, so close he was practically sitting on Kevin. Kevin kind of wished it was the other way around.
"Um, Sam?" Kevin said, already half-hard. Fuck, he thought. It was too late to run away.
"Is that all it takes?" Sam questioned, his voice pure sex and his eyes already undressing the prophet. He was acknowledging Kevin's rapidly growing hard-on. Kevin didn't know what to say.
Sam looked at Kevin sweetly as if asking permission. Kevin nodded subtly as if asking please.
The older man went slow, as if handing a porcelain item, rubbing his palm against Kevin's now fully hard dick.
"Please," Kevin pleaded.
"What do you want, Baby Boy?" Kevin would normally be offended; he didn't like the way the Winchesters loved to belittle him, but this time it was different. It felt… sexy.
"I don't know," he replied. He'd never done this before. He'd never felt lust.
"Do you want me to fuck you?" Sam asked bluntly. Kevin just nodded subtly. "Huh, my little virgin?" he stretched out the word like it was an insult, but really he was just trying to make sure Kevin was okay with losing his virginity to him.
"Please, Sam, take me already!" With that, Sam grabbed Kevin's hand and dragged him into the bedroom, grabbing lube just before he slammed Kevin into the bed.
At first Sam tried to go slowly, but he was overcome by lust and took Kevin rough and hard. Kevin liked it. A lot.