I know this ain't 100% correct but it sounds okay 
when I play it. Easy, but it works!

Capo 3, standard tuning
-------------------------------
G (320003@1)                     DTonight (xx0232@1)I kinda get the feeling
                 EmMy (022000@1)girl is up to something,
CSomething (x32010@1)that is no good.
G (320003@1)                     DShe (xx0232@1)said she only had a meeting,
                       EmBut (022000@1)she is dressed for something,
CSomething (x32010@1)that is no good.
G (320003@1)                           EmNow (022000@1)I'm not saying that she's cheating,
              CBut (x32010@1)seeing is believing,

Can't believe it,
                               DWhat (xx0232@1)I'm seeing when I stepped inside.

Chorus:
G (320003@1)              DShe's (xx0232@1)so wasted, acting crazy
Em (022000@1)            CMaking (x32010@1)a scene, like it's her birthday
G (320003@1)                 DDrinking (xx0232@1)champagne, going insane
Em (022000@1)           C (x32010@1)    
Falling on me, like it's her birthday

GEh, (320003@1)eh, eh, eh, eh, eh, eh
DThis (xx0232@1)ain't the night I thought it'd be
EmOh, (022000@1)oh, oh, oh, oh, oh, oh
CShe (x32010@1)ain't shy, apparently
GEh, (320003@1)eh, eh, eh, eh, eh, eh
DYou (xx0232@1)can hear the crowd and everybody sings
EmOh, (022000@1)oh, oh, oh, oh, oh, oh
CLike (x32010@1)it's her birthday

G (320003@1)                         DShe (xx0232@1)turns and says don't be surprised
                EmIt's (022000@1)gonna be a good night
   CA (x32010@1)good, good night
G (320003@1)                          DShe's (xx0232@1)showing me a different side
                EmWhat (022000@1)I've never seen before
     CThat (x32010@1)I ignore
               GCause (320003@1)when I'm up she's all about me
          DWhen (xx0232@1)I'm down, she spins around me
       EmNow (022000@1)I know I'm one and only
      CSo (x32010@1)I might as well enjoy the ride.

Chorus:
G (320003@1)              DShe's (xx0232@1)so wasted, acting crazy
Em (022000@1)            CMaking (x32010@1)a scene, like it's her birthday
G (320003@1)                 DDrinking (xx0232@1)champagne, going insane
Em (022000@1)           C (x32010@1)    
Falling on me, like it's her birthday

GEh, (320003@1)eh, eh, eh, eh, eh, eh
DThis (xx0232@1)ain't the night I thought it'd be
EmOh, (022000@1)oh, oh, oh, oh, oh, oh
CShe (x32010@1)ain't shy, apparently
GEh, (320003@1)eh, eh, eh, eh, eh, eh
DYou (xx0232@1)can hear the crowd and everybody sings
EmOh, (022000@1)oh, oh, oh, oh, oh, oh
CLike (x32010@1)it's her birthday