Also just to add in she cheat back in January on me.
Tell her no. I’d assume she’s either already cheating or is trying to hook up with someone else without being the bad guy. I’d talk to her about that and if she wants to see other people then we should just end it. I wouldn’t want to see anyone else and if she truly loved me, she would feel the same.
If I didn’t want to be open, I’d just leave. That’s simply an irreconcilable difference.
Opening up a relationship is not a small adjustment. If she decides to bring it up, she has to be ok with the possibility that this conversation could be the end of your relationship.
It seems like from your other comments that you’ve told her how you feel, and she is still insisting on what she wants.
That means that she is prioritizing “openness” ahead of you and your feelings. She wants an open relationship more than she wants a relationship with you. There’s nothing good for you in a dynamic like that.
Leave.
Ask my wife if she’s also cool with it.
I’d be breaking up. nothing wrong with an open relationahip if everyone is into it, but I’m not wired that way.