A similar thing happened to me too! I noticed that a friend of mine was listening to Grace Kelly on his I-pod, and I was like " YAY!! Do you love Mika??!"
and he simply said " No- only Grace Kelly and Relax- but since Relax his not his own song...."" WHAT?!?
and we had a fight about it - he had no idea that I was a mika expert.
but he soon accepted it .