Did you allow the unforgivable jerk to explain her- or himself, or did you cut off contact?

Have you ever been unable to forgive someone close to you, or forgave but still needed to shut him or her out of your life? How did you handle the breakup? Are you glad you chose the path you did, or would you do things differently?

I feel like a huge jerk for just not responding to my former friend, but I can’t believe he did what he did, and now he’s texting me like everything’s normal. I can’t imagine anything he could say to explain himself, and I don’t think I’d forgive him in any event, so is it worth it to talk to him again?