Okay so where to begin. Uhm well my ex and I broke up after 3 years of an off/on thing (max time together 2 years at one time. We were fairly young at the time, I was 12 he 13( ik what your thinking, I'm too young to know what love is but I really did feel it) and when we were together nothing else mattered really. We made each other happy and talked so much. We rarely argued and were very close. But one day finally we were fighting over stupid stuff (I care not to admit what) and I just had it I broke with him, this being the last time. Now prior to the fighting he'd been distant to me for like some months, which is actually what I really broke up over. He'd never try to be with me, I was always the one attempting to talk and he'd just kind of fadedly listen. I regretted breaking up and I tried to text him a few times over the course of a year. Well a year later (now) I realized I still really loved him which hurt me a lot, I also felt lke that pathetic exgf. I've tried dating other guys, and to be honest I had a short string of one night stands to try to get rid of my affections for him. I don't want to love him anymore its torture to me. I've cried my eyes out for hours at a time in the beginning less frequently when I started numbing myself in a sense. I couldn't listen to music I loved because I loves it when we were together and it just reminds me too much of our time together. Well okay long story short, I want to accept that's its over so I can mend my poor broken heart, be able to be affectionate with other guys (in due time of course), and just not love him. Basically I wish to obliterate all feelings I ever had of him. (I'm sorry if the grammar and paragraph settings aren't there, I just am not really too sprung up on being proper at the moment.

I am assuming he was your first boyfriend since you started so young.
You just have to do other things. Do you have girl friends to do things with? Do you have hobbies?
In time it will fade. You are right to stay away from other boys for a while. That would be a big mistake and as young as you are, you need to give yourself an emotional break.