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

This is an alternate ending of The Flash episode 16 with some Superflash. (This has spoilers from season 6 and 5 of The Flash and Supergirl) I don't own any of the characters.

Something happened to Kara Danvers and Barry Allen making them be on a different earth, where they are different people. Will Barry and Kara are going to be able to be back to their earth, or are they going to be stuck forever? I thought about this fanfic when I saw Grant and Melissa both at the first cast for Thea and Roy I don't own any character, they are from the DC and the CW. Also, the photos I used from the cover are from the ig of arrowsmultiverse

Barry and Kara are going to the same college (Keystone), and that's when they fall in love... But someone evil from the future is going to stop that love of them, and someone good from the future is going to stop the evil one and make them fall in love and have the lovely future they are going to have, is the evil someone going to change the future win? Or the good one? AN: You know the drill... I don't own any of the characters etc.