Mon-el has left Kara over and over again and she doesn't know how much more she can take it. First he left Earth, then he left for the future again, and there was even a time where he died. But when a new threat to National City brings them back together, how does she confront him? Who will leave this time?

Soon after the season 3 finale, Mon-El and Kara are reunited when a strange portal opens. Will they get back together and what will happen with the portal? And who or what will come through it? **Just a quick note: I took this from my account on fanfiction.net, so this is my story, but I am continuing it on Wattpad. Disclaimer: I do NOT own Supergirl, The Flash, or Arrow. I just own some of the made up characters in this story.