Taking it day by day

Dated my best friend for 1 year and 3 months. Got engaged at the 1 year mark. Things started going backwards very fast from the engagement. She first postponed the wedding, then withdrew the engagement and then finally broke up with me just over a month ago. She started using words like “she’s loosing her identity” and “she doesn’t feel safe around me”. The more I wanted to chat about these things with her the more she just withdrew. Lil bit over a month since the breakup and missing my best friend tremendously. Connections like that don’t come around often. Think the thing that hurts the most is that this is the first and only person i wanted to commit my life to and they just ended up discarding of me.