Did he give up on me?

Some people say: A men who truly loves you will never let you go, no matter how hard the situation is.

I'm hard to love, i know. I am sensitive and over-react. 
But he said he would never give up on me, never gonna leave me. And now it seems like he just giving up on me. Avoid me. He doesn't make the effort anymore :'(
I really don't know what to do. Will he keep his promises?