I knew a WoW widow in college. Her boyfriend got completely hooked on the game, even to the point that he didn't want to have sex with her any more! She desperately tried to get his attention back but couldn't do it, and ultimately broke up with him. She was (understandably) very bitter about the game after that and wouldn't remotely consider dating someone else who played.

Thankfully as far as I'm aware the dude eventually got control of himself again and is living a pleasant family life these days. But the addiction is real for some people.