When Do You End A Friendship?

When your friend hurts you out of malice, said Dennis Prager on his radio show today.

Even if it is not intended, is it regular?

“Through our mid-thirties, Joseph Telushkin and I were inseperable. We were together almost every day when he lived in California. I remember him saying that he got used to the fact that I didn’t always call back. I’m not a big fan of the phone.”