Worked this out by ear, think it sounds quite accurate, let me know if it sounds good! :)
(Standard Tuning)
(INTRO)
C / Em / Am / G / F
(VERSE 1)
C Em
Oh I was perfect, For the circus
Am G F
If she did me, I do it, Love makes you stupid
C Em
I gave it up, But I guess it was not enough
Am G D
Cause she never seemed satisfied....... (Oohh)
(CHORUS)
F C
I know I'm not perfect,
G
But at the end of the day,
Am G
Who is? (Oohh)
F C
She wanted someone that's perfect
G D
Well okay, But can you tell me Who Is?
F G Am F G D
(Oh Oooh, Oh, wo-o-oh, Oh Oooh, Oh, wo-o-oh.....)
[ Tab from: https://www.guitartabs.cc/tabs/b/bruno_mars/who_is_crd_ver_2.html ]
(VERSE 2)
C Em
She set the bar, Just above the stars
Am G F
A rocket couldn't reach it, But I still kept on reaching
C Em
She watched me try, At least a thousand times
Am G D
If she loved me, She'd stop me But no.......... (Oohh)
(CHORUS)
F C
I know I'm not perfect,
G
But at the end of the day,
Am G
Who is? (Oohh)
F C
She wanted someone that's perfect
G D
Well okay, But can you tell me Who Is?
(BRIDGE)
F E
I saw something worth my future
C G Am G
So wrong So wrong
F E
In my mind I was the reason
C G D
But I guess I wasn't wrong...... (Oohh)
(CHORUS)
F C
I know I'm not perfect,
G
But at the end of the day,
Am G
Who is? (Oohh)
F C
She wanted someone that's perfect
G D
Well okay, But can you tell me Who Is?
F G Am F G D
(Oh Oooh, Oh, wo-o-oh, Oh Oooh, Oh, wo-o-oh.....)