Well the reason why the marriage did break apart was obviously mostly her fault. Even if you aren't into sex that much a partnership is giving and taking not only taking. Ex-husband did much for her, cared for her etc. but she was never satisfying him, neglecting their relationship, talking him down to not earn that much money etc. She is a tensed and frigid woman. The best part will be when she is starting to enjoy sex. To add a little bit drama, of course it will be with some other guy than her ex-husband. But that's okay, he has his fair share of sex anyway with other women.