3. Amunet Black and Goldface
The fact that a couple of guest-starring villains (who only appeared together in one episode) have landed themselves this high up our ranking of disliked Flash couples really goes to show you how much fans hated the pairing between Amunet Black and Goldface. It traumatized so many of them, simply because it was nothing but cringe-inducing cheese.
Okay let's be serious for a moment: Goldface and Amunet Black were perfectly fine villains (enjoyable, even) in small doses. They also paired well together as opposing forces, and sure the romance of it all worked given the characters. However, the absolute unseriousness of the storyline, the corny presentation of it and the pair's over-the-top makeup left Flash fans perplexed.
Hey, I remember the reaction to this episode. The show was getting dragged across the timeline, the fans were distraught over how cringey their favorite show had become, and "Daddy likes the metal" was all over the feed (no matter how much you tried to avoid it).
I think the strong response to this one had less to do with the actual couple and more to do with the fact that this episode came in the midst of The Flash's incredible season 6 comeback (and just a few episodes after Crisis On Infinite Earths). Expectations were high and then this - an episode that is widely considered one of the show's all-time worst - came along.
The writing let Amunet and Goldface down. It wasn't supposed to be taken seriously but it could have been a little less by-the-numbers. This was a plot device for a Valentine's Day episode but it did far more harm to the show than good.