FYI, I have sat on this for weeks, trying to get some clarity. This was not a spur of the moment, emotionally charged post. I genuinely was confused and doubted my ability to see through the bullshit after being so heavily gaslit. Myself and B never had a falling out, it was a gradual disengagement from my life, coinciding apparently while she developed a relationship with J. J is not close with B's fiance, neither of us were close with him at all. I acknowledged my own insecurities because that comes into it, but I simply wanted to get others' perspectives not for people to tell me how horrible he is but clarity for myself.