I can't see any problem here and I believe that any man who can live in s separate accommodation rather than the family house should do. Less problems, less conflicts and the two of them can work in their issues when it arise without getting the others involved and indeed .. they won't be most of the time of a help. She can specify that in the marriage contract, nothing wrong with that.

Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment. (Gautama Buddha)