Reposting that line: "You pushed her into the arms of another man"
(Source: found here https://www.youtube.com/watch?v=09pawcWGekQ by Nicegy019)

When you start to think thoroughly about it, by the time it's not your issue/project, it's not your problem anymore, hence it's a "Winning" situation:
- Since you'll have your energy for whatever you want to do (instead of giving attention, constant validation etc.).
- Her problems will remain hers and/or some other sucker too.
- Keep your resources for yourself and your close ones (in case of emergency or gift).

[- Add Causalities]