What do you think about me asking who my secret santa is?
I'll ask you some questions about it.
Yes, I want to know why. Please ask me questions
A secret santa is supposed to be a secret. It is more pleasant and enjoyable to get a secret than to pry and possible be disappointed.
I wanted the person to know that I know and it was fun to pry like that.
Some secrets are set up for fun and it is expected that you not pry and try to figure them out.