A year, and now nothing, how do I fix my heart?

Okay, this may be hard to understand, but I need some help!

I dated a guy for a year,(after we talked on and off for about a year) and I’m completely aware that highschool realationship’s don’t last forever, but this boy completely stole my heart. I made some mistakes, and I cheated on him, I kissed another guy, and completely deserved to be broken up with. But I can’t seem to get over this boy. It’s been about a month and a half, and I’ve hung out with a few people, and been almost in a relationship with one, but that didn’t work out. I’m currently single, and just wanting to have fun and chill with my friends. (It doesn’t help that they all have boyfriends.)

We recently moved into the house RIGHT beside him, of all places, and I was talking to him today. We have been talking some as friends. I gave him 10 dollar’s so he could go get something to eat, and he gave me a kiss. So, we got talking about stuff, and I explained to him that I thought we needed to try and work thing’s out so that we could be JUST friends, knowing that we wouldn’t be getting back together. I figured it’d be easier to get over the boy if we put it all out on the table, and seriously discussed how we felt.

He told me that after 6 months, (we had some rough times around then…) that he felt like he could either take or leave our relationship, and he hadn’t loved me the same. That killed me. He continued on to say that he cheated on me. He kissed a girl a few times, and wouldn’t tell me what else he did. This also broke my heart. After crying in front of him, and making myself look stupid I went inside and told him to just leave me alone. I want to get over this kid, I’ve been keeping myself busy- focusing on school and hanging out with my girls…Nothing seem’s to be working. I lay down at night, and can’t sleep. Song’s remind me of him, and I constantly replay our memories. So my questions are:

Should we finish the conversation and try to work out being friends, or just forget about that year?

How can I try to get over this boy, and move on to someone who treat’s me right?

THANKS!!!