A man who is unable to set very fundamental boundaries in a relationship is not a real man. If you enter a relationship with the intention of having a monogamous marriage, then get cucked, then accept it, it means you have no spine. Any “boundaries” that you loosely claim to have, really don’t exist. How are you supposed to be a father? Children need a man as a father, not a spineless cuck.
I can respect a man more who just has casual sex/one-night-stands. Because there is a possibility that he can set boundaries once he actually enters a relationship, whereas with you, it’s a certainty that you cannot.