Unless the gaming partner is doing it to excess (more than once a week, and neglects other stuff to "prepare" or whatever), I really don't get people in relationships who have problem with such a thing. Everybody needs some time doing stuff with other people, and no, work doesn't count.
My wife actually drives me to gaming (we have but one car, and it's better that she has it on gaming night, since she can do other stuff then). And the guy who's house we game at is married as well, and not a "nagger" either. My wife did -some- RPG before meeting me, so she knows what it's about even though it doesn't really interests her. Maybe that helped, since Paul's wife is in the same boat.