I'm a man, and I have to agree with he ladies here. I admire the fact that you're trying to make the marriage work. And I respect those who choose to maintain open marriages, if that's what you desire.
But if a traitional marriage is what you desire, I'm afraid you haven't found the right person, and no amount of concession on your part is going to bring you any happiness.
Let me share with you a simple fact of life that someone much older and wiser once shared with me, those in life who get runover, allow it to happen.
I didn't allow it.
You only have as much authority over someone else as they allow you to have.
I am looking into divorce as an option.
Not that I find it palatable.