Can I win him back?

This may be long, please bare with me I really need advice. I just want convey the whole story as best I can. I am an Aquarius.

My Aries and I first met 8-9 years ago through mutual friends we hung out with those friends regularly but never pursued each other. We both started dating other people and both ended up having a child in those other relationships. We didn't see each other for a very long time, and then happened to meet up at a mutual friends house (end of November 2012). We instantly clicked. After a week we met up again, and then a few days later were seeing each other everyday and after another few days he asked that we become a couple (mid December 2012). I told him that i would be leaving for school for a year in august, but if it didn't bother him i was totally willing to commit. he was very supportive of me going to school. He swore up and down that he had never cheated and never would, and i didn't need to worry about that because he was completely in love with me. We saw each other everyday and two months later he moved in with me. 4-6 weeks after moving in his son started spending a lot of time at my house with me and my daughter, I would watch him while my bf was working. He was always telling me how amazing I was and how much he cared for me. We talked about the future and how we would live in the country on a little hobby farm. He told me he would always be happy as long as he had me, my daughter and his son and how he couldn't wait for us all to live together. I was so happy and he was too. We spent all our free time together. The only problem was that he was unable to make me climax (but no one ever has). At first he took it as a challenge but I know that in the end it was bothering him. I thought our sex life was amazing, but I think that really bothered him, like he wasn't good enough. About two months (end of June) before I was suppose to leave he stayed out all night and didn't come home. He called at 7am and told me he had just gotten really drunk and decided to stay at the restaurant he works at and he was on his way home now. I believed him even though I was upset that he didn't call to let me know. After that things were different. We were still close an spending all our time together, but he started working very long hours and started staying after work for a few drinks. I asked him if he still liked me and he said he did that he loved me, but he was just tired from work, but we weren't doing anything after he'd get home

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he would just want to go to bed. When we would talk on the phone while he was working (either from him calling or me calling which was maybe once a shift) he wouldn't really fully say "I love you" back to me. A couple days before he broke up with me we were going out and he had a towel on his seat in the car and I asked if he'd gone to the beach and he said no, when I pointed out the towel he said that everyone at his work had gone for a quick swim to cool off cause it was so hot. The night before we broke up I was upset, because I felt like I was loosing him, he cuddled me and told me he loved me. The next morning we fooled around a bit and snuggled, when he left for work he told me he loved me and gave me a kiss and hug. That night when he came home he was like a different person. He told me he couldn't do it anymore cause he just wasn't happy and I was leaving for school soon anyway. I was devastated. I had no idea what went wrong. Two days later I called and asked him I come over to talk. He said he would but never showed or called. The next day i left a note on his car for him (it wasnt angry, i was just telling him how much i loved him and how i had looked forward to our future together and i apologized for whatever i had done to cause the problem and to please let us try and work it out). About a week after the split I saw his car at a restaurant and waited for him outside. When he came out I asked to talk to him and he agreed. We sat in my car and I asked him if he was just too stressed from work an me leaving and us not spending thy much us time together. He said that it could be, but he wasn't willing to try working anything out. He came over to pick up his stuff (which I had washed folded and packed for him). I hugged him before he left and hugged me back and said he was sorry and he didn't mean to hurt me. A week later I saw him driving around with another girl. Now it all made sense, but why. We were so happy. I found out from his son (not from me asking he just blurted it out) who it was. I would like to ad that his son called me from his moms asking me if he could come over to hang out, I agreed cause he and my daughter are good friends. The person is a girl at his work who had recently moved here from Ireland. I met her once, I'm not sure what I thought. So he had a few more things at my house and I want him to take them. A few weeks later (just a few days before I left for school) I called him and asked him to come pick them up or

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up or when I could drop them off. He said he would pick them up, but then never showed so the day before I left I drove to his work when I knew the kitchen was closed and called to tell him I was here to drop off his stuff. He came out to get his things and I told him I forgave him and I hoped he wouldn't do to her what he did to me. He was speechless. That was the last I spoke to him. I'm now away for school and will be for another ten months at least. When I get back home I want to try getting back with him. What we had together was special and I have forgiven him even though its quite obvious he cheated. No one ever made me feel as special as he did and he told me I was the best thing that ever happened to him, I don't understand how he could just throw it all away unless my going away to school really scared him on top of this slut from his work most likely incessantly hitting on him (our mutual friend who is make said he wasn't even interested in looking at other girls while we were together and he doesn't understand why he would leave me either, they have been friends for over 20 years). I don't plan on doing anything before I return home. What is your advice for winning him back? Do you think he will come back on his own?

What is your sign?

Aquarius 02/03/1984 he is aries 04/04/1973

We did parent eachothers children. My daughter still asks about him (almost 2.5). His son adores me (who is 6).
I know it seems stupid to want him back.
I went to two different psychics while I was seeing (it was just for fun) both are regarded as the "real deal" both of them told me he was my soulmate. One went so far as to say his son would one day call me mom (which bothered me a bit cause i never want my daughter to call someone else mom) and said that his father, who past away a few years, asked me to promise never to abandon him because I was the only one for him and there was no one else. Maybe I'm pathetic for wanting him back but I feel like its meant to be, but I guess only time will tell if that's true or not..