I combined these two questions as they're quite similar. I think loads of people are Wattpad are nice and I've had some really nice conversations with them. People who I have found especially nice are:
AnotherV-Lover
Lexy_LeonettaForever
tinistaforever12
KristinaMancheva
Teamleonetta
I Have quite a few amazing friends on Wattpad. I would say my best friend on Wattpad is Lexy_LeonettaLover as she's really sweet and always comments on my books. Thx for that!