new R&b unknown...

hey guys

there's a song getting pretty frequent airplay here in toronto

its a female r&b artist; pretty sure she's canadian

the lyrics go something like

"You were everything, everything to me, but im sorry babe"

"You don't mean a thing, not a thing to me, you were everything"

"there's nothing more that you can say to get me to stay"

its pretty fast paced, there's a rap part near the end of the song...

any help is great - thanks!!

does anyone have any idea about this song?
any help would be really appreciated!