Someone once asked...

“my gf and i broke up. she wasnt the right one for me but i miss her. what do i do?”

Someone answered with kindness...Thanked by the asker

You are allowed to miss her. You can try to be friends but that isn't always possible for everyone. Slowly but surely learning to live without her will become easier. Find somewhere to channel your love. That can be art, writing, friends, family, pets...