Question that friend asked me?

I was at school today and my friend and I were talking. He asked me if I . This was my response, "Ummmm... that's sort of a personal question." Then I just laughed trying to imply that I do. I really hate hurting others feelings. Also, I've been friends with this kid for about a month now. I'm debating on apologizing and saying something like this, "Sorry for being rude about your question. In fact, I do ." Is this okay? I kind of want to talk about it to him because I have been looking for a friend who I can trust, and maybe this is a good place to start.