Stiles felt himself melting as Derek’s fangs grew, as they brushed his skin so gently. Claws still pressed against him, too, just as careful. No, it was more than just a kink, Stiles was sure. It was because he was an omega, because his mate was an alpha wolf. That’s why he loved Derek’s shift, why it turned him on so much. His mate was powerful, of course it was a thrill to feel it. And it was half of who Derek was.
Fingers still kept running through Derek’s hair, petting him as he nuzzled against Stiles, as he drank in his scent. All that Stiles could smell now was the two of them, their mingled scent, everything about Derek surrounding him in s bubble.
“Please, please-“ Stiles stuttered out, though he wasn’t sure what he was asking for. For Derek to get him pregnant, to fill him, to bring him to orgasm again? Mostly the former. As though they could simply wish around the contraception, as though they could say they tried but it just didn’t work-
The gentle prickle of Derek’s teeth against his mark made Stiles arch and cry out, pressing as close to Derek’s body as he was able to. He didn’t bother to hold back his moans, didn’t bother to keep quiet about how much pleasure he felt. Derek was working his hips in just the right way. The way he wanted and needed.
"Fuck, yes, fuck me," Stiles moaned out, forgetting all sense of gentle purred words, of teasing Derek with their shared desire to create life. No, it was too good. He clung to Derek, head thrown back to give his mate more access to his neck, continuing to moan out with every rock of their joined hips.
One hand held Derek's head where it was, enjoying the thrill of sensation through the mark on his neck, enjoying the swell of the bond between them. Another orgasm rolled through him, heavy and satisfying, his body tensing up with the pleasure, a rough tremble running through him.
He wanted to be pregnant. He wanted this to be the time.
Isaac was watching with dazed eyes, his hand moving slowly up and down his own cock. He wasn't going to reach out and touch, as much as he wanted to. He wanted to nuzzle at Derek, he wanted to run his fingers over his sweaty muscles, he wanted to know what Stiles' skin felt like. But Derek was curled over his mate, the motion of his muscles almost hypnotic. He whined, hearing Stiles gasp, hearing him plead, and Derek growl happily in turn as they tried to breed, to make a pup.