Simple, barry allen likes you and you like the flash.
You and barry bond in a relationship and when it starts to fail you guys take a brake, you move on to a love life with the flash, yet your heart still yearns for barry.
Both Kara and Barry had lost a person that they love, Barry went to Kara's earth to clear his mind, will they fall in love while he stays on Kara's earth?
I don't own any character of this fanfic