I play exactly what is in Version 2 of the Irreplaceable chords
but I think this might make a better bridge:
Capo 3
So since I'm not your everything
How about I be nothing
nothing at all to you?
Baby I won't shed a tear for you
I won't lose a wink of sleep
cuz the truth of the matter is
replacing you is so easy...
The rest of the song is just repetitions of G, D, A, C as shown in Version 2.