How Should I Go About Getting an Ex Back?

Alright, Let me start by saying I would normally never do this. This being, be so desperate as to sign up to a message board, and ask help with my very personal problems from total strangers.
BUT!
Here's the thing, it seems that everyone I know, that I've tried to talk to about this, can't seem to help me. Either, they don't know, or they give really horrible advice, that even I know would just push him further away.
So here's the situation. We started dating the 12th of December of 2005, I met him online through a website called Myspace.com. He seemed really cool over the net, so he gave me his number, and I called him one night, and he asked me to come hang out with him. (really sketchy, yes i know) but it turned out great. We got along really well, and had a really good time. For the next several nights, we would spend hours, (literally 4-5 hours) on the phone everynight before we went to bed, talking about EVERYTHING.
For Christmas, he bought me a $100 dollar bottle of chanel perfume, (mind you we had only met two weeks or so earlier) (and no he isn't rich, wealthy, or well off), this obviously impressed me, and made me believe that he really did like me. Why else would a guy, you JUST met go and spend $100 on a bottle of perfume, when he could of went to a drug store and bought one for $5 and ripped the price tag off? lol. He also took me to his grandmothers on Christmas day to introduce me to his entire family, most of them seemed to like me alot, and i loved them all.

Anyway, we had a lot of great times, partying mostly, but when it was just me and him alone, I swear it was the best time of my life. I felt closer to him, than I've felt towards anyone else in my entire life. He made me feel safe, content, happy with my self (I have a really bad self-esteem issue, self-confidence also). He was also lifting my spirits and making me feel like there was no one above me.

After a while though, maybe in the end of January I found a message from a girl in his inbox on Myspace, (I guess they had met up and whatnot at a local mall and spent the day together) I confronted him about it, I was really upset and sad that he would do this to me. Although we had only been dating a month, I felt like he was the one. He apologized until his face turned blue...

He said, and I qoute, "Whenever I get something good in my life (ME), I always screw things up. Maybe I should just let you go and hope that you move on, because you deserve better than what I've been giving you. But, I don't want to lose you, I need you in my life."

I forgave him, and we were good for a long time. For V-day. I went all out, spent hundreds of dollars on him, buying balloons of all different sizes, shaped like hearts, some saying cute little phrases on them, ect. A dozen roses, a bear from Hallmark that was holding a red heart, and when you pressed his foot, he'd squeeze the heart and say, "Squeeze me, Hug me, Love me." I bought a pork roast and cooked him dinner and served it with a nice bottle of wine. After we ate, I told him we were going for a ride, but I couldn't say where, because it was a surprise.

We got into my car, and I blind folded him, (wove my hand infront of his face to be sure he wasn't peeking ) and we drove to a Hot Tub Spa. I had arranged that the day before, and gone there earlier in the day to set it all up. It was up on a roof top, candles and rose petals all over the place, around the hot tub, in the hot tub. A cd player playing soft music, ect.
He was astounded! Could barely speak, but was foreverly greatful and said that, that had been the best thing that ANYONE had ever done for him for any holiday or special occasion.

Moving on.....He is in the Army, and knew that he'd be shipping out to Iraq in June, and he said that he didn't want a girlfriend waiting back home for him, worrying constantly day after day if he was alright, and vice versa. So ...he broke up with him. Once again, here comes that horrible, terribly over used line, "I want to be with you in the future, just not at the moment. We'll see what happens when I come home."

I tried the whining, I tried the begging, I tried to talk it over with him, which always ended with me practically bawling my eyes out begging him to take me back..As if he was the center of my world the one thing that made my world go 'round. And at the time, he really was.
He was my savior, before him, I was in a horrible rut, always depressed. I had pushed all my friends away and started living a life of solitude, he sort of...Brought me back to the real world I guess you could say....

Anyway, It's a year later....He's back from Iraq, and my feelings for him, are still as strong as ever, we didn't end on mutual terms, I mean I understood his reasoning, and didn't put up a fight about it. Because I was positive that I would have him back in my arms when he came home. But I was wrong....
He has another girlfriend now....That I know he doesn't want to be with, I was told this by him personally. So i figured, this was my chance to try to get him back. Start talking to him slowly, say hi here and there....but from there...I have no idea what to do....

Can someone please give me advice?

-Ahri