This is bit of a long post so TL:DR Sashannarcy helped me realize that polyamory isn't bad.
When I was growing up, I lived in a very conservative family. Love and Relationships was one man and one woman; there were no ifs, ands, or buts.
Through the course of my life, I've learned that love is love; gender is no matter.
But the more I've waded through the internet, the more polyamory I've run into; and it's always been just a little weird to me.
When I watched Amphibia, I, of course, ran into much Sashannarcy amongst its fandom. I didn't hate it, I just couldn't get behind it. I did, however, love Marcanne.
When I started writing my fic, Unto the Anvil, I placed Sasha as the bad guy. Now, to be fair, I definitely want to see Sasha let her freak flag fly, so to speak; I thought she'd make an excellent villain. But I didn't want her to get redemption. I wanted her to stay evil.
However, I think I hated what I perceived what Sasha stood for. She was that third person. I wanted to push her out so I could just have my Marcanne.
It wasn't her though. It was my preconceived notions that I unknowingly placed upon this girl.
But reading fanfics, seeing art, hearing people's dissections of these characters; I realized this.
Anne has two hands, doesn't she? One is for holding Sasha's hand and the other is for Marcy.
I was letting old thinking stand in my way. And while I wouldn't want to be polyamorous myself, this is no reason to hate the idea itself. Let people be happy.
Sasha is still going to be the villain of my story, but her role to play in it has massively changed.
Amphibia has helped me smash my outdated thoughts. As if I couldn't love this show anymore.