I modulated this up from B (where it's originally sung) to C, just so it's easier to play. Enjoy!
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              C
Take off your boots
                  Am9
Leave 'em there on the floor
                  G
And hang that old hat
                   C
On the hook by the door
                     C
Leave the horses and cattle
                    F
And the ranch far behind
                    G
They've had you all week
                        C
Tonight, cowboy, you're mine

                C
Turn down those lights
             Am9
On that nightstand
                            G
Let all that weight on your shoulders
                C
Just melt in my hands
                      C   
That old latch on the barn door
                      F
And that broken fence line
                      G
Will still be there tomorrow
                        C
Tonight, cowboy, you're mine

C  F  G  A  D

                        D 
So leave the horses and cattle
                    G
And the ranch far behind
                    A
They've had you all week
                        D
Tonight, cowboy, you're mine