Help with this..no one will answer?

I was in love with my best guy friend for most of my life. He never felt the same, we were always just friends. We met when we were 10yrs old, and hung out all the time. We're 27 now and both married, and we hardly ever see each other, but I still think about him all the time. I miss him so much and want nothing more than to be able to hold him but I know it's impossible. Whenever I see him I fall in love all over again. I think I make progress but then something pulls me right back into loving him. It hurts so much sometimes I actually can feel pain in my chest. It's been 17yrs since we first met, 5yrs since he got married and 4yrs since I did..when will my heart heal? Will it ever? I feel like a crazy person..what can I do!