How to tell crazy wife I'm bi

We have been married for over 5 years and she hates bi girls with a PASSION. Ive been missing the feel of being with men for awhile. I bring it up and it's a huge deal. Like drag out fight huge.. FYI she was once with a man and they made a child so it's not like she never been with a man before... I wanna try either an open marriage or just bring a guy in. One it would help us get pregnant 2 who couldn't use an extra hand around the house?. In all seriousness I need some advice. I love her dearly I don't wanna loose her but I want to be true to myself. Help... Should I just say nothing? 😬Ugh IDK help me please