It all sort of started when Stiles was talking to this guy from his forensics class and Scott couldn’t help but notice the way his heart jumped a bit when the other guy laughed or smiled a certain smug way. He couldn’t help the certain dazzle in his eyes and the flirty tone that Stiles took on, leaning against the locker and trying to be smooth (and being awfully successful at it to Scott’s own surprise, Stiles and smooth were often not very acquainted.)