Dropping another tab off for you r&b lovers like myself.
As always, listen to the song for the flow of it.

Intro/Verse/Chrous/Outro

   Gb     Ab    (?)    Fm
    |       |     |     |
E:----------------6----------------|
A:----------------8----------------|    
D:--4-------6-----8-----3333-3-3---|
G:--3-------5-----6-----1111-1-1---|
B:--2-------4-----6-----1111-1-1---|
E:--2-4-6---4-6-8-6-----1111-1-1---|


Bridge

   Gb     Fm  Dbmaj7
    |      |    |
E:-------------------------|
A:-------------------------|
D:--4-44-4-3-4--3-33-3-3---| X3
G:--3-33-3-1-3--1-11-1-1---|
B:--2-22-2-1-2--2-22-1-2---|
E:--2-22-2-1-2--1-11-1-1---|

Then

   Gb    Ab  Dbmaj7
    |     |   |
E:------------------|
A:------------------|
D:--4-444-6-6-3-----|
G:--3-333-5-5-1-----|
B:--2-222-4-4-2-----|
E:--2-222-4-4-1-----|

Enjoy :).
Feedback is welcomed at *