Why do I want to contact him!?

Part of me wants to beg for him to try again, but part of me wants to let him know how badly he hurt me and try to get answers as to why he led me on and then ended our engagement over the phone! I am having such a hard time with the way he chose to end things and why he had to say all of those sweet things only days before he ended it. But, he won't respond to me because he completely erased me like I was nothing. Why do they act like we do not exist!? He doesn't want to see me or talk to me because it's too "emotional."

I am only a shell of myself! He called me and I had to move my life and restart again and he is going on like nothing happened.