Im in love with my Bestfriend

I told my bestfriend that i was in love with him. He never told me back, it hurts to watch him with other people, girl in particular. I feel in my heart that he has feeling for me, but he just taking to long to express them and im tired of waiting. everyone around us can see that we are meant to be togather, they alwasys telling me that he is my husband, but why cant he see that? someone please tell me what to do!