B.o.b and Bruno Mars- Nothin On You, where is the chorus sampled from????

[Canucks3322]

I don't listen to the radio ever and my friends keep talking about this Bruno Mars character so I looked him up on youtube and heard this one hit song of his with B.o.b......and I swear the chorus that Bruno Mars sings is from a classic RnB track way back in the day.....anyone know it??? I'm thinking it's R. Kelly era, late 90's early 2000's??? It has to be...nobody writes this good an RnB hook these days but if it's original then I may just have to check out his other music...

[Unlaced]

Pretty sure its his own hook.

http://www.songfacts.com/detail.php?id=18587

[Canucks3322]

Yea, I think I must've heard it playing the a store in the mall one day and like all other pop songs, it gets stuck in your head....and then on Saturday night, I saw him on SNL and he was singing it and thought I had heard it back in the day lol....it's a decent song.