I’m am engaged to a man that I love deeply, and out sex life is great, but he tells me that he will never be sexually satisfied in a monogamous relationship. He claims that most men aren’t happy having only one sexual partner and that is due to their biology. He expects me to be sexually exclusive with him fully, because it’s “unnatural for women to have more than one sexual partner”, but he expects me to be on with us having threesomes with other women consistently to keep him sexually satisfied and give him the sexual variety that he desires.

This has left me feeling heartbroken and depressed because I want to feel that I am enough romantically and sexually for the man that I am about to marry, but he tells me that that is a unrealistic expectation to have and no man on earth will be happy being fully monogamous, especially men that are very successful and good looking (which my fiancé is)

I would love some genuine advice from men. Is it unrealistic for me to expect full monogamy from my future husband? Or is it really true that all men have this deep need in them to constantly sleep with different women while they have a wife and a family on the side?