I based this off of the live acoustic video on youtube. Im pretty sure its right, 
i dont want to say 100% though. Sometimes i put:

E-x-----0-----|
B-3-----3-----|
G-2-----2-----|  I did that because you can only hear the e string ringing 
D-0-----0-----|  for half of the chord.
A-0-----0-----|
E-0-----0-----|

Enjoy..

Intro:

E-------0------------------------|
B--------------------------------|
G---2-----2---2---2---2---1---1--|  [3x] Im on a trip..
D-0---0-----0---4---4---2---2----|
A--------------------------------|
E--------------------------------|

Then last time through:

E-------0-------------0----------|
B--------------------------------|
G---2-----2---2---2-----2---1----|  [2x] 
D-0---0-----0---4---4-----2------|
A--------------------------------|
E--------------------------------|

Your 21 I see..  barely sober

E-x-----0-----x-------------------|
B-3-----3-----2-------------------|
G-2-----2-----2-----1-------------| [3x]
D-0-----0-----4-----2-------------|
A-0-----0-----4-----2-------------|
E-0-----0-----2-------------------|

...Then you said

E-x-----0---------------------|
B-3-----3---------------------|
G-2-----2-------1-------------| [1x]
D-0-----0-------2-------------|
A-0-----0-------2-------------|
E-0-----0---------------------|

(chorus)

Nooooooowooooaaaa..never..be inside of you

E-x----------0---------------|
B-2----------3---------------|
G-2-----1----2-----2------1--| [2x]
D-4-----2----------2------2--|
A-4-----2-----------------2--|
E-2--------------------------|

I know...fall ...waiting..all

E-x--------0-------x--------------------|
B-3--------0-------2--------------------|
G-2--------4-------2--------1-----------|  [2x]
D-0--------4-------4--------2-----------|
A-0--------2-------4--------2-----------|
E-0--------0-------2--------------------|

I know I know..       inside you..inside of youu

E-x-------------0-------x-----------------------|
B-3-------------0-------2-----------------------|
G-2-------------4-------2-----------1-----------|  [2x]
D-0-------------4-------4-----------2-----------|
A-0-------------2-------4-----------2-----------|
E-0-------------0-------2-----------------------|

Repeat intro until..

so dont say..just wanna run away.

E--0---------x-------------------|
B--3---------2-------------------|
G--2---------2----------1--------|  [3x]
D--0---------4----------2--------|
A--0---------4----------2--------|
E--0---------2-------------------|

..Then you said

E-x-----0---------------------|
B-3-----3---------------------|
G-2-----2-------1-------------| [1x]
D-0-----0-------2-------------|
A-0-----0-------2-------------|
E-0-----0---------------------|

Chorus... then he does

0                            0              0
 0                            0              0
 2 x alot then some kind of   7 thing then   1 thing?.. 
 2                            7              2
 0                            5              2
 0                            0              0

Then Chorus again..

THE END