Have any of you girls ever had a bestfriend do or say something that completely broke you? Please help by sharing advice or stories

Me and my best friend had a disagreement about something that literally shattered me too my core and it hasn’t been resolved, we both just agreed to let it go because it was going to end badly if we kept agruing over it but i think about it every day and each time i think of it, it shatters me all over again.

It was about something personal to me and we both had our reasons to disagree but it hurts everyday and speaking about it does nothing for us but make it worse. It’s been months since it happened by it still hurts so bad

Ps. I love her so much, like so so so much and I know she loves me too so I don’t want to give off a bad impression about her