Well honestly, I can relate, and it fucking hurts. Most of the time because you have this HUGE mind story about how the girl is special, how great both of you could be together and so on and so forth. Of course once that collapses you're left with quite some trauma.
It might be insignificant, but it can FEEL very real and painfull.
Aside from getting more girls and getting more attractive, and of course cutlivating abundance, I would recommend watching some teal swan about upset, trauma, learning self-love, etc.