yeah, so what? Shit ended badly, we’ve all been there. It usually didn’t have to end badly but someone fucked some shit up along the way.
It’s just something you have to accept…any relationship with that person will forever be tainted by whatever stupid shit you/they did while the original relationship was ending. It’d be nice if we could go back and just “erase” moments when we totally fucked up any possibility of a future (you know those moments when you say/do something while thinking “This is a bad fucking idea and I’m totally going to regret this” but you do it anyway), but hey…you can’t.
So let it die and if you can ACTUALLY turn off any feelings for her, I suggest you do so.