Now it's been about 3.5 months for me.
Did you notice that you are questioning YOURSELF in dealing with him?
You need to put your FIRM foot down and accept NOTHING LESS than what you DESERVE. You are married. He is MARRIED. You are supposed to be ONE.
He is finding a way to make his relationships with women acceptable to you. Problem is- he tells you AFTER he has done things. I do not trust what he is saying to you and I will tell you why.