Honestly, I would just talk to him about how you feel. you're a gamer, I'm sure you know whats its like to be sucked into a game...sometimes you honestly don't notice. My bf and I are gamers too, and this happened to us once. He was really interested in a game I wasn't, and after a while that was all he was playing. When I pointed out how it made me feel, he instantly changed the behavior. We'd play a different game or watch a movie, ect. He would play the game while I was studying or something. It worked out well, but if that doesn't work...well what psy said