Shirtless was a good beginning, especially when it meant feeling Stiles' naked chest against his own, his face pressed into Derek's neck. Sniffing. Scenting. Making his cock throb against the curve of Stiles bottom where it pressed into his lap.
To know that his mate enjoyed his scent as much as Derek enjoyed his? Yeah, hot button right there. And Stiles stayed there, kissing like he wanted that smell all over him and Derek couldn't stop the little whine that hung in his throat, hands dropping down to knead at Stiles' hips. His own ground up slowly, still seeking pleasure even between two layers of pants.
Pants that needed to come off.
Luckily, his mate was on the same page as he was, because even though he left his lap, and Derek bit back his growl of displeasure, Derek watched him slide out of his jeans, hard and slick, and the edges of his vision went red. This was his mate, his beautiful, sexy mate that was his to touch and fuck and love and make puppies with. His. And he couldn't help but reach down to squeeze his own cock while he watched Stiles baring all that pale skin for him.
A welcoming growl rumbled in his chest when Stiles came back to his lap, his arms wrapping around his waist to pull him closer and nuzzled at his collarbone. His pack was going to have to wait to watch him get mounted, because Derek couldn't wait, not when he smelled so fucking good. Reaching down between them, he unzipped and shoved his jeans down enough to get free of them, length smacking against his mate's perfect ass. "Want," was all h could say as he lifted his mate up enough to have the head of his cock flush between his cheeks, pressing up against his entrance and slowly lowering him down with a wrecked moan.