Being obsessed with something shows a lack of control.
Roger just got a new video game and invites his girlfriend, Sandy over.
Roger wants to enjoy his new game.
Roger plays his game and takes breaks to visit with Sandy.
Roger gets so involved with the game that he ignores Sandy.
Sandy enjoys Roger enjoying his game and feels Roger cares about her.
Sandy ends up breaking up with Roger because she feels he cares more about video games than about her.