Deep into drug addiction, I found out I was being sent off to rehab the next day. I only had one day to say my goodbyes, and I gunned my car all the way to my girlfirend's. It was the first serious relationship that I've had, and I had some pretty awful codepedency issues. Being a pretty anti-social angsty teenager, I never had anyone that I could really talk to until I met her. She was the only person that I didn't have to put up some tough front for, and the first time that I really felt connected to someone else. I told her that I only had a day left in the state, and I just wanted to spend the rest of the day with her. She broke up with me on the spot, and told me she just couldn't do it anymore. After an ugly argument and a lot of tears, I went back home, and shot up the rest of my stash. I don't really remember what happened, but I remember waking up the next day and packing in a hurry because I had woken up only an hour from when my flight was scheduled. My dad would not even look at me. I went to say goodbye to my mom, and she was a wreck. She's a fucking tiger mom, and she's tough as shit, and I had never seen her really cry before. I told her it was going to be okay and that I would come home better. She told me that it was her birthday, and my stomach sank all the way to my feet. I couldn't even process what was happening, it was like everything in my life had just built up to this shitty point. Shittiest two days of my life. Maybe not, but pretty close. For two years I was hung up on that girl, and kept trying to find ways to get back into contact with her until I realized I had to let go.

I know that was really long winded, but the context is what made that break up the shittiest. I'm really sorry to hear that OP. There's no instant magical cure to making it feel better, but it gets better with time.