Just yesterday I stopped talking to a friend
That recently? Is there a reason why you stopped talking to a friend?
Yes, I find him boring.
It's unkind to stop talking to a friend without telling them. You should let them know that you don't want to talk to them anymore so they're not left in the dark.
So, I should put up with that friend and deal with his boring ass company?
I'm just trying to say that if your friendship is not working out, you should tell him instead of just ghosting him and making him distraught. It takes little effort and it very polite to tell him, so why not try?