Her Heart was Never Yours
We've all been there. Some woman and girl who you thought liked you just up and dropped you like a used dishrag and it was usually over some guy that ended up dropping her a few weeks or months later because he was bored with her
How do you stop this from happening?
Don't play the game for one MGTOW
The other is to have something in your life that gives you purpose and meaning that doesn't require the validation of a woman. That way your life has something in it regardless of what the outcome is, OR even better yet what someone else tells you what's important