How do you tell a guy to f**k off forever?

So there's this guy I've been going out with for several months now... we're not together. We're kinda fwbs. It's majorly complicated but more than anything we're really good friends who also have a lot of sexual chemistry and sometimes fuck.

Well last night we were talking on the phone and he told me about something really shitty he did that I don't wanna get into. I'll just say that it really really hurt my feelings and I felt violated (my trust especially).

I was actually about ready to cry on the phone because I was so hurt but I made up an excuse that I had to go.

Now I never wanna talk to him again tbh. But I'm afraid we're too close to end things that way... can I just stop responding to his calls/texts after all this time? Or do I have to end it officially? And how do I do that... I do NOT feel like telling him the real reason why cuz I don't wanna show him that he hurt me?

Why are some guys so emotionally retarded like, bad enough that he did it but then to tell me and sit there laughing about it? It feels like most guys are autistic..
How do you tell a guy to f**k off forever?
Post Opinion