You and Gar have been dating since the Teen Titan days and currently had an apartment together, Gar would usually stay up late playing games, so when you returned from patrol, you heard him in your guys room.

"Damn, nearly got that guy..." A short pause "Yeah, yeah, I know you got the last shot on the boss, Vic..."

Gar seems to be playing games well on call with Victor again. You could easily sneak in to scare him or just surprise him. It wouldn't be hard to do.