Hello lilly.
Your story sounds like so many other soap operas I've heard about and lived through myself. Monogomy is unnatural, so don't be surprised if your man is indeed craving for that work woman and vice versa. I keep my opposite-sex relationships platonic. As soon as couples start expecting fidelity from their partner, it usually starts getting dysfunctional. That's just what I think. Even when monogomous, most betrothed couples start acting really weird as soon as they promise not to ever be intimate with another. Live on your own for awhile. Make some platonic male friends and you'll really learn what we're like; OK, not ALL of us, but most of us.