A bummer man. In my humble opinion, feelings that is not reciprocated is worse than being dumped. I've had a time in my life where I loved a girl more than anything in the world, she loved me, but unfortunately she loved someone else more. For a short few months, life was incredibly, wonderfully perfect. We could have a whole conversation with our eyes just looking at each other. Eventually I had to let her go (long, looooong story) as whatever chemicals my body was producing when she was around/away, was getting too rough to handle.
I walked around gutted for months and months, everything literally seemed bleak, but the pain did fade. Yours will as well.
On another note, I think every relationship that ends changes a person irreversibly. As if a small piece of your heart dies along with the death of a relationship. Sadly, it can reinforce the rest of your heart to a point where letting another person in is difficult. I'm in a happy 7 year relationship, but I still guard the core of my heart and being. I can't go through that type of gut wrenching pain again. I would not recognise myself at the end this time.
Anyway, chin up. Plenty of fish and all that. Keep busy and before you know it, the sun will shine a bit brighter again.