Hes my best friend... but i have to let him go.?

So crap, and we sim not gonna tell you his name because if my friends found out i would NEVER hear the end of it. but anyway- hes my bestfriend sence the beggining of 8th grade year. he exsepts me for me, and put up with all my crap, we had a thing but then he wen't out with my bestfriend (they had been on and off through the year) over the summer they broke up for good, and She and I are no longer friends anymore... because it was spread around school that he had cheeted on her with me. (i would never do that, and because she thought i would do that to my BEST FRIEND; i drooped her real quick) but i have had a crush on him ever since second semeter, and he said that before him and my ex-best friend went out he was gonna ask me out, but his best friend texted her off his phone and was just messin around with her, but my bestfriend is to nice of a guy to tell her. but it broke my heart. i didnt let anyone know. But anyway- after they broke up for good it was alredy too late for us. I had moved ofer this last month and still like him, i think i love him. i swear hes everything good in life! me with out him...its like he was my sun, ( i know it sounds cheesy) but its true,he was my reason to smile, i have no reason now. before i left he gave me his football jersy, and i cant go to sleep at night with out it, i miss him so much, but i hve to let him go! theres no way we can be togethr, he probbly does even think of me hat way anymore... but every thought i have is about him. im asking is how i can let him go? advice? please? i dont know what to do.