Well, actually it should be "kalbindeki tatli sizi neden
ki." The "ki" should be seperate. I'm a stickler on these things...
Anyway, yes, "tatli sizi" means "sweet pain". The whole thing means "Why the sweet pain in your heart?"
Quick Turkish lesson! "Kalp" means "heart". "Neden" is "reason". So that equals "why", because it's a question.
Hope I helped...
Oh, and I'm pretty sure the song isn't Turkish. Although my brother just said that it might be a Turkish singer's duet with Ricky Martin. Ehh, I'll never find that song...
