A man spends 10-20 hours every day with a woman in a virtual world. He “marries” her. Is he cheating on his flesh and blood wife? Of course he is. He may not be having sex with his virtual mistress but marriage is about a lot more than who you have sex with.

Sitting alone in the living room in front of the television, Mrs. Hoogestraat says she worries it will be years before her husband realizes that he’s traded his real life for a pixilated fantasy existence, one that doesn’t include her.

Is This Man Cheating on His Wife? – WSJ.com