Peter whines in response to that growl, and he leans in, licks against Derek's chin in a way that's all apology. He just needs this, needs him so much, and there's never been anyone that would take care of him. Not with human skin and fingers that press to his body. His head falls back as Derek's face nuzzles into his neck, and that growl echoes against his skin. It's a warning, but it's also a promise. It's also an acknowledgement that Derek's claiming him, that they're finally pulling taut that connection between them, letting it mean something.

He cries out, sharp and breath stolen from his lungs as Derek rolls hips against him. The denim of his jeans against his hard cock, and he shivers, shakes at the friction that's too much and not enough. He mewls in answer to those words, a plea, needy and desperate. He needs Derek inside of him more than he can even really think about.

Derek is stripping out of his jeans, and that's when Peter really notices it: wet warmth between his legs, sliding down his thighs and there's a surprised gasp. He shifts, tries to draw his legs back together in embarrassment, because this, he doesn't understand. He knew the basics, understood most of it, but Nicolae had never detailed exactly what happened when you had sex with your mate.