Well, to be honest I don't think this is an enjoyable dynamic for anyone involved in any possible combination. Most people are happier when their beloved loves them back with something approaching the intensity that they, themselves, feel. The symmetry doesn't have to be exact, but if it's too lopsided it just causes suffering.

But whatever the literary merits of overturning the traditional gender dynamic of the lover-beloved, it seems to me that a woman in a traditional society with a husband who doesn't love her is in a really bad way, because she lacks one of the few levers she would have to exert any influence over his behavior.