Tired but pissed off rn

I was gonna go to bed but I found out that the GC I'm in with some friends, my cousin, and my brother has an offshoot GC without me and my brother called "F you [Brother's name]". And now I've lowkey been spiralling cause if they'll do that about him, can I really trust them not to do that about me? It doesn't help that I also just ended things with my bsf of about a year cause after promising not to date my brother (for reference, my bsf before her got with him and it ruined our friendship, which the more recent bsf is aware of), she did for three whole weeks while hiding it from me the entire time. And a lot of fucked up shit she did came to light after that. And sure, maybe you could argue that my brother seems to be stirring up a lot of shit with my friends. But idk, now I just wonder if anyone is as genuine as I always stupidly believe. It seems like everyone is just, idk, mean and in disguise about it. I don't like being lonely but if this is the alternative I can't say it's much better. Sorry if this is incoherent, I'm really tired. Thanks for reading tho <3