I'm irritated as fuck I'm irritated as fuck

My friend is getting together with my situationships boyfriends brother. My friend let's call her J is getting together with a guy S. S is K's brother and K is the boyfriend of the girl I dated for 5 months, broke up with, and now have a situationship with, A. Now u may ask why I'm irritated asf. All of us smoke together. See the problem is, K is very insecure when it comes to his and A's relationship so I can only really see A if he comes with and normally when he comes his brother S will as well. If J breaks up with S, I'll have to take J's side obviously because she's my friend. That also means that I won't be able to hang out with S and K will have wanted me to take S's side so he won't want to see me either and if K doesn't want to see me then A won't be able to. Maybe on rare occasion but this completely screws things up for me. I've been in love with A for a year and I'm not letting J ruin all the work I've put into this arrangement. Sorry if this doesn't make sense I'm writing while shits going down