How do I overcome this bullshit thinking? Recently broke up with LTR and can't stop thinking about her getting every hole filled. 5 years of me treating her like a princess for chad to treat her like a slut.

I want her to get into another LTR, hopefully a successful one so she can have a happy and fulfilled life. But I know it's likely her low impulse control, low self esteem and destructive tendencies may lead her to doing everything that isn't right in the long run. How do I overcome this shit? This beta shit is eating me up from the inside.