Tim never was one for sharing his plans with others.

Jason tilts his head and stares at the innocuous post it notes on his fridge.

Jason raises his eyebrows. "So we like… spar? And you'll what, let me fuck you if I win?" "Sure. If you win." Tim smiles and a thrill goes up Jason's spine. He shucks off his jacket and shoes before making his way to the mat. "It's a deal, then. Hope you won't regret it, Replacement." Tim's teeth look strangely sharp under the Cave lighting when he says, "I'll try my best."

Jason, on a mission, gets captured. Tim, working undercover, goes to get him out. There's...a side benefit.