Broken Promises & No "goodbye."

My former boyfriend left for basic training about 4 months ago. It was a long time dream of his to join the US Army and I supported his dream, even though we had only been together a few weeks before he had to leave. Before he left, he promised me things like how he'd stay with me forever & how he'd never been so in love with someone as me. He would say the most sweetest things that could make you want to cry. I figured he was different than any other guy I had been with in the past, & hands down, I knew it was the best relationship I had ever been in. I was so broken inside when he left. I felt like all the color out of my world had disappeard. He came into my life when things weren't so good, and made everything seem perfect. Now he was gone. The first month of him being gone was okay. He had written quite a few letters & I was so happy when I got them. The second month, he still wrote, but not as much but I assumed this was because he was busy. By the time May rolled around, I could tell there was a change in him. I knew there would be eventually, so I just brushed it off as no big deal. Well, toward the end of the month, he got his 36-hour pass, and texted me. I knew he had changed. Alot. He didn't talk at all like he did before he left and I would always be the one to say "i love you" first. I didn't wanna think about the bad things, but I did. I just tried to keep telling myself that when he got home, it would be all better.. He returned home 2 weeks ago, and not once did he come visit me or even talk to me on the phone. I haven't heard his voice since the beginning of basic training. He knew how bad I wanted to see him and how long I had waited for him. He couldn't even tell me that we were over. He left two days ago for his deployment overseas. He'll be gone for a year. It hurts knowing that what we had is over & how much he changed in so little amount of time. It breaks my heart even worse to know that he didn't even tell me "goodbye" knowing that he may never see me again. It's almost like I meant nothing to him.. I've been trying to forget about it & move on. & it doesn't hurt so bad when I'm surrounded by people who love me and care for me.. but when I'm alone, the emptiness fills my broken heart.