Super-girl Stories

When supergirl AKA Kara Danvers break up(Cheated) with Barry Allen AKA Flash for Mon-el he was broken inside in every way possible but before he can respond to the break-up and accident happens will barry recover with the help of red daughter or will he conquer the world come find out (this is my first story,writing is awful it gets better I assure you) (I own nothing but the plot,You know what?I don't even own the plot CW and DC do)