I wouldn’t marry a man who does not believe in monogamy- monogamy of the heart, soul, and mind as well as body. Actually, I think exclusive affection is more important than exclusivity of the body (that is ultimately important as well). I’m too intelligent not to know if his affections are divided, so he should know from the start if he wants me, he can want no other.
I also would not marry a man who was not biologically born a man. No altered men, please. DNA must by XY.