Thought about a past relationship

A thought has been coming up for me regarding an old romantic relationship from a number of years ago. I don’t think it nearly as often as I once did, but it’s still lingering. I wanted to get feedback on my model to make sure I’m doing it right, especially on the action and result lines.

C: A past relationship
T: Our relationship wasn’t supposed to end.
F: Hurt, betrayed
A: Ruminate; distance myself from my current relationship
R: I perceive my current relationship as not as significant [or] I hold on to the thought that our relationship wasn’t supposed to end.

I know this thought doesn’t serve me. It doesn’t feel good. It holds me back from giving and experiencing deeper love in my current relationship.