My epic quest for love

My third and most recent relationship was not actually a relationship. This time she was older than me. She's 26, I'm a month away from 22. She was a brat, role wise. So, I had almost no clue how to deal with her. We were 'together' for about two months. We lived together, as we had been friends for a time. Our relationship wasn't very sexual, as we had opposing work schedules. The relationship ended when I didn't want to sit around and talk, as I was tired and didn't feel very well. I also wasn't wearing anything, and I realise that I should have just put on some pants and listened to her. It wasn't an official relationship, but it hurt worse than anything I'd ever felt. I've endured my physically abusive father, a few schoolyard fights, a back alley brawl, and two attempted muggings, but this hurt worse. I've tried to talk to her, apologized ad nausium, all to no avail. I actually care about her, but she apparently does not. I'm currently staying with my mother across town because going home just gives me a massive panic attack, and makes my depression flair up. It doesn't help that I get attached so easily. If she told me I could make it up to her right now, I'd do it.