My chord diagrams show the right variation of chords you may already know.
The song is fairly easy, good luck.

Chord diagrams:

    G   D   C7/G   Ebm6/A   Em   Bm7   Eb/B   B   Am/F#
e:  3   2   0      8        0    5     3      2   5
B:  0   3   0      7        0    3     4      4   5
G:  0   2   0      8        0    4     4      4   5
D:  0   0   2      7        2    4     5      5   4
A:  2       3               2           
E:  3       3               0           

G                  D               C7/G             Ebm6/A
    The problem is all inside your head she said to me,
Em                D           Bm7           Eb/B  B
    The answer is easy if you take it logically.
G               D                C7/G           Ebm6/A    
    I'd like to help you in your struggle to be free.
                  G       Am/F#              G
    There must be - fifty ways to leave your lover.

G                 D             C7/G        Ebm6/A    
    You know it's really not my habit to intrude,
           Em             D                Bm7             Eb/B     B
    Furthermore I hope my meaning won't be lost or miss-construed,
               G          D        C7/G          Ebm6/A     
    But I'll repeat myself, at the risk of being crude.
                  G       Am/F#              G
    There must be - fifty ways to leave your lover
    G     Am/F#              G
    Fifty ways to leave your lover

                      G                     Bb
    Just slip out the back jack, make a new plan stan,
                  C7/G                    G
    No need to be coy Roy, just listen to me
               G                      Bb
    Hop on the bus gus, don't need to discuss much,
                      C7/G                      G
    Just drop off the key Lee, and set yourself free
x2

G               D                C7/G            Ebm6/A
    You know it grieves me so to see you in such pain
Em                   D                       Bm7            Eb/B     B
    I wish there was something I could do to make you smile again
G              D                   C7/G             Ebm6/A 
    I said "I appreciate that, and would you please explain
              G     Am/F#        G
    'Bout the fifty ways"

G                 D                  C7/G          Ebm6/A
    She said "why don't we both just sleep on it tonight,
          Em                  D              Bm7              Eb/B     B
    And I believe that in the morning you'll begin to see the light."
        G               D             C7/G         Ebm6/A
    She kissed me and I realised, she probably was right,
                  G       Am/F#              G
    There must be - fifty ways to leave your lover.
G         Am/F#              G
    Fifty ways to leave your lover

                      G                     Bb
    Just slip out the back jack, make a new plan stan,
                  C7/G                    G
    No need to be coy Roy, just listen to me
               G                      Bb
    Hop on the bus gus, don't need to discuss much,
                      C7/G                      G
    Just drop off the key Lee, and set yourself free
x2