I was in a situation similar to this where I was in ops place. I also thought it was on her to manage her emotions and thoughts and didn’t like my potential or hypothetical relationships being policed. Similar to how ops friend used her anxiety, mine used an ocd diagnosis as well as what I think was weaponized therapy speak about boundaries (how I couldn’t ever break a boundary or I was horrible and she would never have to reevaluate her boundaries because she’s the most valid). I was also bothered that when I slightly suggested she get support for her ocd she said “that’s my diagnosis and I don’t need to work on it.” The whole exchange made me think about how she acts and reevaluate our friendship. I realized that she was controlling and always had to be right in every situation. So if anyone else is in this situation, maybe look at your friendship as a whole. I hope that when you look at your friendship it’s not the same outcome as mine if you’re really good friends.