Valid feelings?

Okay first of all i have this friend, we were coworkers. My bf at the time was also our coworker. She was our mutual friend. We sometimes all hung out together but sometimes he would tell me that he wants just the two of us to hang. She is a type of person that is in everybody’s business and tells everybody’s business to everybody so we had our boyfriends but they were both really toxic to us especially her boyfriend, which low-key got like a. physical abuse relationship between them but that’s not the point.

The point is we’ve been friends for like 2 to 3 years now, and I feel drained through the friendship because she talk to me for a couple of months and then goes ghost on me basically talking to me on her terms. I mean she has been a “good” friend in the past when I was down during my toxic relationship, she confronted my ex as to why he treated me wrongly. He basically blocked both of us and she was still working with him (My ex). He is a manager and basically kicked her out for a reason I don’t know.. So lately he told me he try to reach out to me through her but she didn’t respond to him but also she never told me that he reached out. I don’t know why I have the feeling that they messed with each other. I really don’t have any proof, but I overall just feel drained from being friends with her because she basically made us date. She also had her situation ship is going on in her life. Not sure how to go about the situation and also not sure how to feel. With all that has been said, do you think they messed around behind my back?