I get married to fictional characters occasionally.
I talk endlessly about how cute my cat's bum is.
If I upset my dog I say sorry by licking her on the face. It's how you say "sorry" in dog (probably.)
I don't have a furry partner, but I have had close friends over the internet and I do like to know their real name, and for them to know mine. It's to avoid the possibility that we'll lose touch and never be able to find each other. It's easier to find someone you've lost touch with if you know...