Well, I don't watch Supergirl anymore after the season two finale. I can tolerate a lot, but no one jobs Superman and keeps my viewership, not even Kara. I did happen on a clip that show the Legion of Superheroes, with Saturn Girl stating that the Legion was inspired by Kara's example. The heck?! Is there nothing from the Superman mythos that they won't steal? I find it deplorable, but then I remember that Superman fans, readers, viewers, etc. aren't concerned with the LOS and Superman's legacy even onto the future. If anything, it cements that I won't be watching Supergirl anytime soon.
Well, Mon El returned back to her after what was to her a 7 month leave, but to him 7 years in the Future with the legion, and he ended up marrying Saturn Girl I believe!