Friend admitted she considered going after my BF while we were together
I (26F) have a close friend (25F) who got a little too infatuated with my bf (32M) this summer. She would ask about/talk about him with me all the time, only wanted to hang out gout with me if he would come, I had to ask her to stop talking about him, at on point she asked me if I thought home wrecking was an awful thing to do. One night she got wine drunk, demanded my "rich lawyer boyfriend" come pay for our group's dinner, and said she was in love with him- which was my breaking point. I love this woman she is truly one of my best friends, so I sat her down and confronted her about it in July. She was very apologetic and admitted she was feeling horrible in her own dating life, felt jealous I had bagged a great guy, said she started and SSRI and felt like she wasn't being herself at all, basically she had a lot going on at the time. She always kind been the "boy crazy" friend in our group and has admitted that she gets a little delusional when there's a man in her life. I ended up keeping her and my bf at separate events until she got over it, she got her meds adjusted, took a break from dating for a bit, and she's seeing someone else now. Things were awkward for a bit but went back to normal after a few weeks.
Well, over the weekend I was hanging out with my friends and she was talking about not feeling great with the current guy she's seeing. She said "I just get so delusional when I bring a man into my life. Like with the [boyfriend's name] thing, I was thinking "how far would I actually go with my friend's boyfriend?" which was crazy of me".
I get that she's acknowledging that her thinking was off, but when I initially confronted her she told me she loved our friendship and would never do anything to hurt me, our friendship, or my relationship. I believed her, and her comment is making me doubt that was true. Am I overreacting or was that genuinely a wild and concerning thing to say? How do I talk to her about this or do I just need to accept the end of our friendship??
tl;dr- one of my best friends was infatuated with my boyfriend, got over it, and now says she wondered how far she would have gone with him