Ooh, if platonic friendships count, since I'm female, I'd have to say Fluttershy. We have so much in common, it would be fun to have her around. We could play with fluffy kittens and bunnies and chat about animals. I'm also very softspoken and nice. My friends who have seen the show always are first to point out I am just like her, even if I deny it. .-. But I think we would be the best of friends.
Plus who wouldn't want to hug her? She's too cute!