Do you really plan to never talk to him again? If you knew the D was final, you wouldn't have talked to him at all?
I am sorry you didn't know, that really sucks. I don't think he's been laughing at you - it sounds like he still cares about you. That doesn't mean he's feeling the "in love" feelings, but I bet he still loves you too.
Think of this as the time to get everything in order - and to start your new life.
