I'm a mid-twenties lesbian, and I never thought this would happen to me. We were three years into a relationship, and I was considering proposing. She knew my gender-critical views, and I assumed she agreed with me since during the few times I brought it up, she seemed to respond positively to what I was saying. We had both gone through some intense dysphoria as teenagers and (I thought) now accepted ourselves and our bodies for being female.
But about a month ago, she started out by telling me that she was embarrassed to have me around her trans friends since she knew that I would call them by their correct sexes behind their backs. Then she dropped the bombshell that she has been packing and really enjoys that feeling, that she has been binding her breasts, and that she strongly hates feminine-gendered titles like "Ms." and "wife". She wasn't sure exactly what she identifies as, but she no longer "identifies with" being a woman. There were a few other things we disagreed on, but I think it was mostly the trans issue that caused her to want to leave the relationship.
Then, just a few days ago, after having a period of separation, we broke up for good. I'm at a loss. I saw my whole future with her. I never thought she would fall for the trans BS. I'm sad that this relationship is over, I'm sort of relieved she dropped this bombshell before I proposed, and I'm also worried for her. She's an adult and she can do what she likes with her body, but I'm worried about her health should she choose to make any permanent medical decisions.
I just needed to vent here. I hope this is ok to post. Any heartbreak advice or similar stories would be appreciated.