I reckon when Dumbledore asked Draco to join his side.It's all so touching

I loved it when ron broke up with Lavendar in his sleep.

dumbledore's death

I agree with the op, at the end of The Cave where Dumbledore tells Harry, "I am not worried, Harry. I am with you." I must have re-read that line 10 times the first time. It was so short, but so touching. It showed Dumbledore had complete confidence in Harry's abilities. It's probably one of my favorite quotes in the entire series.

I also really liked how small things were making Harry smile and want to laugh during the funeral. Everyone deals with grief in different ways, and I think Dumbledore would want Harry to really see all of the love in the world still and smile.

There were a lot of really moving moments, but Dumbledore's death made me cry. It made me so emotional.