I Battle Depression

I got a letter from my ex who I haven't talk to in almost a year today. It was just some paperwork for my car I signed over to her parents before I left. I didn't look at them. Nothing from her asking how I'm doing or anything. I ripped up the papers, important or not, and now I'm sitting in the dark, floored by how what I considered my first real love couldn't even be bothered to ask if I was doing okay. I moved across the country in the worst point of my life to be with her, and she doesn't even care to wonder how I'm doing. I'm just so floored by it all, so crushed and hurt by it. I don't understand how someone I loved, and I don't use the word love lightly, could be so heartless to me, as if I abused her. I worshiped the ground she walked on and I'm not even good enough to merit a, "Hey, I hope things are okay."

I don't understand. What is so bad about me?