There were a dozen reasons why their bond was so strong already, but the bite -- the bite had solidified it, and it was still growing stronger.
As it should be between a wolf and his mate.
Derek let out a soft, affectionate noise once he was buried as deep as he could go, the last of his control spent on that slow, measured thrust of his hips.
He felt Stiles settle under him, that little shift that said hew as trying to get his legs wider, but Derek stayed exactly where he was in a momentary show of patience. "My little mate," he said nearly in a growl. "So good for me, waiting until my tongue was in you to come, and you came so much for me--" He nuzzled up to his ear, rubbing his slick-damp scruff against the rigid edge. "Good boy, baby."
Everything about his mate, down to that whimper that made him suck in a breath was keyed directly into his arousal. Do pass Go and collect every damn cent in the bank.
His smile turned sly when Stiles looked back at him, and he released his wrist in favor of wrapping an arm around his hips, the edge of his claws poking into the skin of his hip. "My mate needs --" Derek started to say as he drew out, a little whimper rattling around in his throat to not feel Stiles along his whole length anymore, red eyes momentarily turning pleading. He needed to be inside -- needed to fill him up, to satisfy his mate, to give him everything --
"So fucking wet for me --" A little part of him wanted to fuck back into him slowly, keep him on this edge for hours, listen to his mate strung out and needy for his cock, but Stiles was begging so pretty--
"Guess who didn't take his pills this morning?" He finally whispered and rocked in, hips driving forward and arm holding him still, keeping Stiles right where he wanted him as that little thread of control snapped and he started fucking his mate in earnest, deep fast strokes that had him moaning and growling, the base of his cock already starting to thicken.
"Gonna baby, gonna knot you up so good, come so much in you, get you pregnant. Gonna take you back to your house tomorrow and have dinner with you and your dad and know that you're already knocked up with our kid, that while you ask him to pass the potatoes, our kid is growing in you--"