I’m so done and disappointed

We been “bestfriends” for a whole year , ever since he got a boyfriend he’s been putting the boyfriend on a pedestal, he’s very negative and last month he recently crossed a boundary between me and my crush because my friend went behind my back to ask my crush what he had thought of me and my friend is slowly showing me more disrespectful ways, I also feel like his boyfriend is telling him and talking bad about me behind my back(his boyfriend seems toxic and narcissistic) my friend doesn’t see his boyfriend red flags on how he’s toxic af and he’s also easy to manipulate and slow af, I’ve been telling my friend whenever he’s hurting me and I’m getting tired of repeating myself, I’m so hurt and disappointed in him but I’m not surprised I’ll probably slowly start getting distant with him and probably end up cutting him off like the rest of the people who hurt me before. I gave him more than 3 chances and I’m done.he has tried making me feel bad just cuz of his disability and how he’s slow too.he also showed me he doesn’t care about me on my birthday so I had enough and I got tired of explaining myself I don’t think I’m safe with being friends with him anymore nor to save the friendship.

I’ve didn’t text him at all Sunday and told him yesterday I need space but the more time I take the more I keep realizing it’s not worth it anymore to be friends.