Chords:
EADGBe
Eb: 668886
Ab: 466544
Cm: 335543
Bb: 113331
The song uses the same finger-picking pattern throughout like this,
e|----------------------|
b|-------------x--------|
G|-------x-----------x--|
D|----------x-----x-----|
A|----x-----------------|
E|----------------------|
I'm not sure if this is 100% accurate but it sounds fine playing it this way to me.
Intro
Eb Ab
Eb Ab Eb Ab Eb
It was backstage in Moscow late one night
Ab Eb Ab Eb
We shared a cigarette, a kiss goodbye
Cm Bb Ab Eb
Her name was Cayenne, so young and soft
Cm Bb Ab Eb
Her hands trembled badly, her eyes trailed off
Cm Bb Ab Eb
To bottles and objects around the room
Cm Bb Ab Eb
My backup guitar, a tray of food
Ab Eb Ab Eb
We didn't have very much to say
Ab Eb Ab Eb
She said that she'd come from some other place
Cm Bb Ab Eb
A town called Troyskirt, maybe Troysworth
Cm Bb Ab Eb
I was pretty distracted packing my stuff
Cm Bb Ab Eb
But I did make a point to ask her to stay
Cm Bb Ab Eb
But she said she had friends that she had to go see
Ab Eb Ab Eb
Later that summer I picked up my mail
Ab Eb Ab Eb
She sent me a letter with a touching detail
Cm Bb Ab Eb
"I used up my minutes calling hotels
Cm Bb Ab Eb
To find you that night but to no avail"
Cm Bb Ab Eb
"I know it's pathetic," she continued to write,
Cm Bb Ab Eb
"But that was the greatest night of my life."
Source: https://tabs.ultimate-guitar.com/tab/sun_kil_moon/i_know_its_pathetic_but_that_was_the_greatest_night_of_my_life_chords_1467699