Move on with your life, work in fixing you and your life. If your lives co-mingle again in the future so be it, but you shouldn't be waiting for someone else to fix themselves to give you another chance.
Hell, I just married someone who once broke my heart so badly that I went on anti-depressants to keep from killing myself. She changed, I changed, but it took time. Years of time.
Lots of healing, lots of time, lots of introspection. Oh, and a lot of apologizing on her part, she still apologizes at least once a week.
"Well, then," the Cat went on, "you see a dog growls when it's angry, and wags its tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad."