I hope these chords helps. Maybe they are not exactly like William plays it but it can be helpful.
Capo on 7th fret
Chords relative to capo
Listen to the song and get the right feeling.
(Main chords): C G Dadd11 Em
C 032010
G 320000, 32022 or 35500
Dadd11 054030, you can play D too
Em 022000
Intro: C G Dadd11 Em C G Dadd11
Em C G Dadd11
I'm not comfortable with how we never talk
Em C G
And I miss you since you went out for that walk
Dadd11 Em C G
Its been 13 months since May
Dadd11 Em C, G, Dmaj11
It still feels like yesterday
Em C G Dadd11
I was scared to fix what I had broke
Em C G Dadd11
Its a lonely place to live with just a ghost
Em C G Dadd11
There is love left in my life, I will see
Em C G Dadd11
But you still hurt me
Em C G Dadd11
Em C G Dadd11
I can still see all your clothes thrown on the floor
Em C G Dadd11
There are friends who never call me anymore
Em C G Dadd11
I remember throwing out all of your things
Em C G Dadd11
But I think I kept my ring
(Dadd11) C G Dadd11
I'm not comfortable with how the story ends
Em C G Dadd11
We were lovers and now we're not even friends
Em C G Dadd11
You were perfect and I guess I'm just a creep
Em C G Dadd11 Em
But you still hurt me
Outro: C G Dadd11 Em
If you want to use a ukulele these chords sounds great with Eu-tuning (ADF#B)
Ukulele chords: G D A Bm
G replaces the C
D replaces the G
A replaces the Dadd11
Bm replaces the Em