Even if it was "just" 10 lbs, that's a pound a month, and if it's a steady trend, it's not gonna reverse by itself, she'll only keep ballooning. In one of her comments she said "I would want him to stay reasonably in shape for me. I think if he gained a bunch of weight it would bother me too." So he's probably at least less fat than she is. And the way he brought it up, in bed before sleep, was rather clumsy. (IMO bed is for sleeping and intimacy, it's a safe haven for the two of you. Find a better time/place to bring up stuff like that.) Who knows if they deserve each other.