A great song by the obscure soul singer Darondo. I'm surprised it hasn't already been tabbed.

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Intro: Bb - Am - Gm (x4)

Bb (x1333x@1)       Am (x02210@1)          GmDidn't (355333@1)I treat yah right now? (Didn't I?)
Bb (x1333x@1)        Am (x02210@1)             GmDidn't (355333@1)I do the best I could now? (Didn't I?)
Bb (x1333x@1)      Am (x02210@1)         GmDidn't (355333@1)I give yah everything? (Didn't I?)
Bb (x1333x@1)             Am (x02210@1)        GmI (355333@1)tried my best just to be a man. (Didn't I?)

Bridge:

Am (x02210@1)        GmDidn't (355333@1)I do my best baby?
Am (x02210@1)        GmDidn't (355333@1)I do it right?
Am (x02210@1)          GmWhy (355333@1)you wanna leave me, baby?
Am (x02210@1)           GmDidn't (355333@1)I treat yah right?

Sorry, I haven't figured out the third part yet. 
I just speed up the verses for it. This, though, is how most 
of the rest of the song goes. Cheers.

I couldn't find his official site, so here are Darondo's Wikipedia and 
Allmusic pages, respectively:

http://en.wikipedia.org/wiki/Darondo
http://www.allmusic.com/artist/darondo-p733713