I’m afraid if I was in your position, his behaviour would have poured cold water on any loving feelings I would have had towards him, unfortunately this is about his character, not something that he can change, for me it would be the beginning of the end, my grandchildren are so precious to me. My father was once nasty towards my grandson, because he got upset and Quietly cried ... only three years old , it brought back bad memories of my childhood, I’ve not really been able to see him in a better light ever since, and now he has died I don’t believe that’s going to change.