I've read that there's actually a formula determining if villagers get along or not! I think there's a chart that shows it, but I'm too lazy to look for it RN
And I'ma say Freya and Dobie. They chat a lot on my island and seem to get along well, and the other day they were chatting and Freya was all blushy and sweet and thanked him for the flowers and he's like "Well, you're always nice to me" and she's like "Yes, but yellow hyacinths? That means you want to be MORE than friends in the language of flowers..." and Dobie starts panicking and is like "IDK what the flowers told you but it DIDN'T come from me!" It was so cute