Loss of best friend to suicide

Riley

Cara was my first love and girlfriend. We were best friends that even after stopped dating were still best friends. I loved her more than I can explain. I had gotten her friends and parents involved after her last suicide attempt. She was so angry with me and didn’t want to talk to me. I kept sending her messages and I knew she’d come around and realize it was out of love. Turns out she killed herself three days after. I found out yesterday. I don’t know how to cope and I could really use some feedback. I feel so alone and so at fault. I don’t know what to do.