Been looking for this song for ages so I though I though I would give a go in figuring 
out the chords. They sound alright but feel free to make changes enjoy :)

DHow (xx0232@1)can I go on
       F#mWhen (244222@1)I know I gave it all
                  G (320003@1) AHave (x02220@1)I given too much
DSomething (xx0232@1)inside your heart
   F#mIs (244222@1)pushing me aside
                   G (320003@1)     AAnd (x02220@1)it seems so un-you baby
                    F#m (244222@1)BmBut (x24432@1)it's so hard on me
               Em (022000@1)            AWhat (x02220@1)is it I'm seeing in your eyes
                    Em (022000@1)              G (320003@1)name="chord_x02220@1">A
The story that I'm reading says goodbye

G (320003@1)            ATell (x02220@1)me baby where did we go wrong
           F#m (244222@1)          BmHow (x24432@1)did we lose a love so strong
            G (320003@1)                 AWhat (x02220@1)can I say to make things right
          F#m (244222@1)              BmBaby (x24432@1)hold on, don't leave tonight
                   GThere's (320003@1)no reason why
                         AThis (x02220@1)part of us should die
              DDon't (xx0232@1)say goodbye

DSearching (xx0232@1)for answers
              F#mBut (244222@1)they're oh so hard to find
                        G (320003@1)      A'Cause (x02220@1)I'm still loving you baby
                         F#m (244222@1)name="chord_x24432@1">Bm
Oh, are you still loving me
               Em (022000@1)                ABaby (x02220@1)don't you turn and close the door
                Em (022000@1)        GIs (320003@1)it you don't love me anymore

A (x02220@1)          G (320003@1)              ATell (x02220@1)me baby where did we go wrong
           F#m (244222@1)           BmHow (x24432@1)did we lose a love so strong
            G (320003@1)               AWhat (x02220@1)can I say to make things right
          F#m (244222@1)              BmBaby (x24432@1)hold on, don't leave tonight
                   GThere's (320003@1)no reason why
                        AThis (x02220@1)part of us should die
              F#mDon't (244222@1)say goodbye
               Bm (x24432@1)     F#mDon't (244222@1)leave me now all alone
                BmDon't (x24432@1)bring me down
                     G (320003@1)  A'Cause (x02220@1)I'm not that strong
            G (320003@1)             A (x02220@1)name="chord_x1333x@1">Bb
I need your love to carry on

Half step up or you can play original

Ab (xx1114@1)           BbTell (x1333x@1)me baby where did we go wrong
           Gm (355333@1)           CmHow (x3101x@1)did we lose a love so strong
           Ab (xx1114@1)                BbWhat (x1333x@1)can I say to make things right
          Gm (355333@1)               CmBaby (x3101x@1)hold on, don't leave tonight
                   AbThere's (xx1114@1)no reason why
                       BbThis (x1333x@1)part of us should die

Don't say goodbye

Ab (xx1114@1)                Bbwhere (x1333x@1)did we go wrong
           Gm (355333@1)           CmHow (x3101x@1)did we lose a love so strong
           Ab (xx1114@1)                BbWhat (x1333x@1)can I say to make things right
          Gm (355333@1)               CmBaby (x3101x@1)hold on, don't leave tonight
                  AbThere's (xx1114@1)no reason why
                       BbThis (x1333x@1)part of us should die
              EbDon't (x43121@3)say goodbye
                 AbThere's (xx1114@1)no reason why
                       BbThis (x1333x@1)part of us should die
              EbDon't (x43121@3)say goodbye