My monogamous LTR turned open/ non-monogamous 1 year ago. It started with group play, and then we became comfortable with dating separately. The boundaries we created were initially unrealistic, and only set us up for failure. Totally my fault. We (mostly me) began to read books to better understand our attachment issues, grow, and evolve. My relationship turned into a LDR. For work reasons. Shortly after the move my partner started to see someone regularly. I struggled to find someone with similar outlooks in my new location. About a year into the LDR my partner decided they were growing less interested in dating separately. Coincidentally that’s when I started to form like-minded connections in my new location. I was about to go on a date and my partner decided they no longer wanted an open relationship. Now I’m pissed. Our issues in the beginning dealt with trust and control. I got over that hump with a lot of work on myself. Now that I’m about to see someone else my partner is stating that being poly immoral. I think it’s obvious that they are experiencing similar attachment issues i experienced when I couldn’t find someone. I have recommended therapy, reading more, and requested their consideration that poly isn’t the issue. Could they have really been involved with someone else regularly and felt it was immoral the entire time? Why when I start to see someone has there been a change in this outlook? I’m uncertain of how to proceed.