What song is this? Please help!?

I always constantly hear this song on Z100 on the radio (Aka 100.3) And it begins like this: (I really wanna know the title of this song cuz i love it so much and btw its a girl in a soft voice singing in da beginning, if that helps and this is not in the right order:) eye to eye (Echo), side to side (Echo), cheek to cheek (Echo) , nose to nose (Echo) PLEASE TELL MEHH.