You had been lifelong friends with Spencer since he joined the BAU and started his career. You had always had a thing for him, but always told yourself it was normal. But he'd been having the same problem. Over time, you always noticed how possessive he was. You didn't mind it. You found it endearing at times.

Whilst working on a case, Spencer was being, surprisingly, jealous. In order to crack the unsub, the only way you could get a confession was by flirting.