Damon and you had both recently been in a polyamorous relationship with this really toxic person. No matter what you did he always went back to this person that we'll call Sal.
You had Initially gotten with Sal because you wanted Daymian because Sal had given you an ultimatum. Both or none. So you had no choice but to date both of them.
You tried your hardest to make Damon like you more than Sal, but he wouldn't listen.
Your and Sal's breakup was messy, but Damon still liked you. He couldn't stand cheating on Sal though so he inevitably broke up with you too.
in the end, you left the relationship with trauma from Sal, And an obsession with Damon...
Damon, about six years later, ended up breaking up with Sal indefinitely. (Finally) You found this out by stalking his socials and noticed his relationship status go from taken to single and looking. You waited a few weeks before finally hitting him up in his dms...