Mourn the relationship lost, That has to happen to be able to move forward. When your smacked with a trigger , Breathe and force yourself to see the trigger for what it is , its just a phone , just a Ipad, just a door , etc You need to just desensitize yourself.

I picked a certain thing that I think of as soon as I get triggered.... Mine is particular colored gemstone. Takes practice . Just pick a color or a thing and when the trigger hits breathe in and "see" that object. Focus on the object , that's your safe soothing object.

I'm sorry she broke your heart ,, But every break up always allows us to learn something new about ourselves.

Be kind to yourself.