I (F35) miss my Boyfriend's (M37) ex crush

I miss my boyfriend's crush. I know, it's weird to even say it outloud, and I'm sure you must be wondering, how? why? did you even know her? And the truth is, I didn't. At least as fas as he's concerned.

Some years ago I suspected him still liking this girl he had once told me about when we were in college. I met him in class, and we became friends, and then I was with my ex. So we became friends and he (my boyfriend, i mean) used to confide in me about his dating life and crushes. And this one girl stood out. I was a bit jealous of her. She had a lot in common with him, she was gorgeous, with a perfect body and according to him, she was a real freak, into lots of very kinky stuff.

So, when years after being together, he once mentioned her because someone reminded him of her in a movie, I thought she was still around. So I did what any normal territorial girlfriend would do: I made myself a fake account in my socials and followed her. Long story short, we became great friends, chatting about life and everything. She didn't have many friends, either, so she began confiding in me a lot. On friday nights we'd chat about the movies we've seen and share stories of past loves and even sex. I told her I was seeing someone, and of course, I changed my boyfriend's name. Then I discovered that my boyfriend haven't spoken to her in years, and that she still had a slight crush on him. Which made me feel pitty for her, when she told me that she knew things with him would have never worked out because he was seeing this girl whom he've had a crush during college. She didn't know that it was me. I considered coming clean to her, but i thought it could might as well be an atomic bomb on my relationship. So... I ended it. I did it gradually. First I'd take days or weeks before replying. Then a month, then one day I told her i was under a lot of stress from work, life, etc, and that I was seeing this new therapist who told me to keep off socials. So I did. Deleted the account and said my goodbies to a wonderful girl whom I felt once was my competition, but it turns out... she was just another girl, trying to get by and find love, like the rest of us.

I really hope she has found someone now.