How do I untie the connection of Steve and I in my heart and soul?

Steve and I met back in 2008 on here, We became friends because we had many things in common.I started to fall in love with Steve and I told him. He accepted the fact that I was in love with him, but on his end, he didn't want me to be in love with him.I was hurt for a minute, but eventually moved on and dated people.It's a year later, and Steve hasn't e-mailed me on here; I've sent him numerous e-mails, but he hasn't e-mailed me back; Nor has he made any efforts to even wish me a happy holiday or etc. I'm not sure what's going on and I have no other way to e-mail him; Other than, through yahoo answers e-mail.I forgave Steve for walking out of my life as a friend because he clearly told me that he didn't want a relationship with him, but yet, instill he flirted with me on and off and I guess I got mixed signals. The point of the matter is, I need to let Steve go and move forward. In my heart and mind, I believes that he's the one that I dream about and could have a future with. I can't look at another man, without seeing him. By this connection still tied to Steve and I, it's making the process harder for me to date other people. I didn't walk out of Steve's life, he walked out of mines and didn't say, " Goodbye, I'm sorry, or even talk to you later." I do believe that we could have had a beautiful life together and possible future; He was like my other half and he completed me in so many ways when it came to my feelings. It would be nice if he could close the book with me and just tell me something as friends. Friends who care about each other, just don't leave and say nothing after a year. I need closure on my end, but the truth is, Steve has close his end for the book to be sealed away. How do I move on, if Steve is always there in the back of my mind, soul, and heart?