What Would You Do If Your Friend Was Pushing You Away? *sighs*

I have a friend that is pushing me for reason unknown to me. He has made me feel like day old trash. He gets a new friend then he starts to push me aside even ignoring me. My feelings are hurt.
I must be stupidly NICE! Do I have a welcome Mat on my face that says "Walk On Stupid"...?

I tried to tell him once but then I became chicken to tell him the reason why I left him a message about being ignored & about our friendship, if he was having second thoughts about being friends with me then I would understand but then he asked me about it that’s when I clamed up and said I don't know.

I am such a coward!
I am even stupid for being such a nice of a person.
*sighs even shed a few tears*

Would you tell him how you feel then say goodbye?