(Without) The Key to Your Heart

For this prompt: Derek & Stiles have girlfriends but they had a one-night stand. Stiles is a selfish jerk and Derek started to have feelings. “Let’s take this secret to the grave, shall we?” Stiles asked, eyebrow raised and with just the hint of sultriness in his voice. “I’m not objecting,” Derek said, nuzzling his face into Stiles’ neck. “And I was hoping for round two,” Stiles said, letting out a soft purr. “Or three. Or five.”