Lolly. She has shown nothing but compassion towards me, and it's outright adorable and flattering. I could write a whole wlal of text about her, but I did that in one or two other threads.
Yeah, not sure if I would date any villagers, but if we could room with villagers my best friend/roomate would have to be Walker or Cherry. Both have been in my towns for a long time and are the closest with my mayor. Although Colton gets really flirty with my male charterer...
I'm more into the special characters myself (there's like 5 that I'd date tbh lol), but if I had to pick a villager, probably Tabby. Just cause she's a sweetheart and my favorite villager since WW.