I figured out the intro which can also be used for the verses. Pre-Chorus and Chorus I 
been able to tab or figured out the chords for.

A variation of F, to some extent, is the main chord here. NOT F barre chord.

This is how it should look:

E-x----------------|
B-1----------------|
G---2--------------|
D-----3------------|
A-x----------------|
E-x----------------|


Intro/Verse:

E----0-------0-------0--------0---| x 8
B------1-------1-------1--------1-|
G---2-------0-------2-------0-----|
D-3-------2-------0-------2-------|
A---------------------------------|
E---------------------------------|

You can double-up with a second guitar that can strum the chords:

F/C/Am/G - All natural chords, nothing fancy.

Example:

F       C       Am    G
Lucy at the gym.
      F          C         Am     G
She's there everytime I go.
      F             C     Am    G
And I don't go that often.
            F       C        Am    G
So she must live at the gym.