It didn't ever happened to me before to be honest. My boyfriend and my friends knew that I'm obsessed with Ayumi Hamasaki. So much that I spend money on her CDs and merchandise lol.
But if I'd happen.. well I'd just say: If my soul would have sound, it will be like an Ayu song.
It's easy to say 'oh I like that singer because her/his music is cool', but it's difficult to find the singer who you truly love either. Not in a creepy way of course

I mean, that her music and lyrics relate to
you completely. Even if she's singing in a different language than yours.