You say that you love me love me
Love me but you don't know athang about me no you don't know athang about me but you say that.you love me

Sounds like 'Lovefool' by the Cardigans.

The lyrics to Kelly Clarkson's 'Mr Know It All' are quite similar, maybe this is it :)
Mr. Know It All - Kelly Clarkson (lyrics) - YouTube (http://youtu.be/TETOnLVEVfY)