again; i dont know hardly any lyrics apart from a bit of the song, and it's an male and women artist in the same song, possible duet? from my recolection; they sing at different parts of the song but maybe together towards end of song, the female artist could be black but i'm not to sure; this is how part of the lyrics from the song go...

(say you needed someone esle, i love you... but that dont??)

female artist sings^^^ male artist sings^^^
or
(say you need somebody else, i love you... but that dont??)

female artist sings^^^ male artist sings^^^

again; i'm sure that that is the chorus or main part of the song, mid way through and thats best way i can describe it of the top of my head, i've described it best i could, and hopefully someone will recognise the song i've tried to describe; and post a reply