I'm going to stop talking to a friend for months
Why would you stop talking to your friend?
I talk to my friend whenever he needs to. He knows me really well.
It's not very nice to just stop talking to people for months. Your friend might get very upset.
I haven't talked to my friend since he made an offensive joke about the rape victim, this might be my new plan.
It is kind of messed up to just stop talking to your friend all together though. If you he said something you really did not agree with, than you should at least let him know before ghosting him.