I love this song! But no one seems to have made tabs for it. So I had a go via my uke. 
This particular version was based off her duet with Nina Storey.
Cheers!

Uke tabs: (GCEA tuning)
G: 0232
C7:0002
Em:0432
D:2220
Eb:3331
Eb dim:2320
Am:2000
A:2100
----------------

Verse 1
   G               C7
I know, you had a smile,
               Em        D       C7
throws me off guard it makes it hard
          G               C7
I cant think out of this fog
             Em         D            C7
you say the words that tore with my heart


Pre-Chorus
    Em     D        Eb
for me to stop it wont be easy


Chorus
G                       C
do, do what you have to do
                       G
Im not chasing after you
                     C7
what Im gonna do is take my time,
                       G
live life and just be happy
                C
not gonna have care
                       G
maybe youll wont be there
                 C7
free to be me so go or stay either way


           G
I will be happy
           C7
I will be happy,
           G
I will be happy
           C7
I will be happy


Verse 2

Wont look back, to much to see
plenty of chances in front of me
I'm not, not standing still,
if you can catch up to me you will

(pre-chorus + chorus)

         Eb dim
I will be happy


Bridge
                 G
With or without you
    Eb dim
be happy
                  G
with all that we are
    Am                    A
if me plus you, makes us true
C                     (D)
Come and run away with me

(Chorus repeated a couple of times)

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[http://www.appleciderchronicles.pw/melissa-polinars-happy-chords-and-lyrics/]