my partner (A) has been my fp for the 5 months we’ve been together, but recently i’ve started talking to one of my old fp’s (B) just platonically and i feel like he might be becoming my fp again and i don’t really know what to do about it. 

for reference, i identify as a lesbian because i’m only attracted to the female anatomy. A is non binary, and was assigned female at birth and are comfortable with me still identifying as such, B is a cis man.

B and i had a romantic relationship for a while a bit under a year ago or so (i identified as bisexual at the time), though we didn’t officially date because i have commitment issues. he was always nothing but good to me but i didn’t know how to handle it because i wasn’t used to being treated that way so there were some issues on my end there, and the relationship ended when i realised i was a lesbian and he realised he was asexual, which was a bit of an issue as i’m very very hyper sexual, but we ended on good terms and just kind of drifted apart. with A it was completely different, they kissed me on the first time hanging out and asked me out on the second and i ended up saying yes. with B he pretty much became my fp naturally but with A it was very rushed and maybe a little forced. 

my relationship with A has been a bit rocky recently and they ended up not talking to me much for a while, and i at the same time was starting to become friends with B again and ended up venting to him a lot of the time about things they did and said that maybe weren’t great and he ended up kind of helping me realise that they might be lying to and gaslighting me (only through this recent period i’ve been talking about) and so i got really mad at A and more attached to B, but in A’s defence they were going through a lot and have a lot of mental health issues too. A is being better again and has been great over the past couple days but the damage might already be done, and B is constantly trying not to get a romantic attachment to me and that’s not helping. i still love A and want to stay with them but if B is my fp again they’re gonna get really mad at me and idk what they’d do. what do i do?