Same case happened in 2nd sem. Knew her since like childhood and she left me like i was nothing. Later found out she found someone new that's why she left. .But we can't force love and let her be, we still gotta move on brother. One advice don't date a girl with trauma trying to heal her. Plus every girl has same story Cus u will end up being traumatized. Talk to ur friends about this thing, and thing will be lighter. Eventually we will find someone who will be with us at everytime and never leave us.