Puppy- How do you say to someone who doesn't really care what you think, "I will not live in an open marriage?" I know as far as he's concerned, our marriage is already over in his eyes and he can "do whatever he wants". I mean, do I just say it and give him the ultimatum to end it or leave? I guess I'm just not sure how to set that when I already know that he won't care what I say, he's not ending it. He doesn't flaunt it, he doesn't call her or text when he's home in my or daughter's presence, he takes cash out of the bank so I don't even see where he's going, I just don't know how to set that boundary?