re: Anyone else not on speaking terms with a parent?

My dad asked me to take care of his girlfriend if anything were to happen to him. This was after four wives (I think). We went a couple of years without talking after an argument about that.

He died about two years ago while and was in a relationship with a different woman at the time.
We reconciled prior to his death, somewhat. But he had gone so far off the rails that I really didn't recognize him as the man who raised me.