I've had a breakup with my first love. All my problems vanished in the relation for a long time, but now she is gone and my problems are back. I will still see her in the future since we live in the same city and we are in the same school. We still want to be friends later... but it's so painful now. I thought I was more over it because it has been 4 weeks. But it's coming back. 

I miss all the great moments we had, I miss her, mental problems are very present again, and I just lack the motivation to get out of bed ... I don't like anything anymore. How can I find my purpose back for life?