Derek's hands tightened on the boy's hips as he took the lead back from Stiles, using lips and tongue to playfully subdue the boy.
Yes, this was what he wanted. The way their bodies responded to each other, moved together. The rest...that was just details.
He turned his head to the side to kiss the length of the boy's jaw, to nip and scrape the tender skin and see it marked. "No more tantrums," he murmured, soft, chastising.