My FP/bf is best friends with a Nazi sympathiser (let’s call him Joe). I used to be friends with Joe too until his beliefs became more salient. I tried to have civil discussions with him about his beliefs in an attempt to change his mind but he’s one of those people who is just resistant to seeing things differently. After that I just cut ties with him completely.

My FP stopped talking to Joe as well for like a week, but now he is talking to him again. I confronted him about this, saying that he shouldn’t just give away his friendship for free to someone who doesn’t deserve it. I suggested that he keep away from Joe until Joe expresses a genuine desire to change. My FP is not interested, and continues hanging out with Joe. 

In predictable BPD style, I split on my FP and have told him that I’m not speaking to him as long as he remains friends with Joe. My FP says I’m being childish and thinks I’m going to get over it soon. 

But this is different. Usually I split for selfish reasons, but I think this issue is different because I don’t want my FP cosying up to someone with dangerous ideas that affect other people. Am I the asshole in this scenario?

Strongly considering just abandoning my FP for good after this because I have had enough.