I didn't tab this myself, a very talented guy on youtube did - check him out, he's really good.
http://www.youtube.com/watch?v=L_JJUxXekVs&feature=watch_response
Capo 2
C
Im sleeping through the day
C
Im trying not to fade
G
But every single night
G
Ive just been lying awake
Am F
Cause I, I cant get you off my mind
C
The moment that we met, I didnt know yet
G
That I was looking at a face Ill never forget
Am F
Cause I, I cant get you off my mind
F (G) C
I cant get you off my mind
C
Give me the chance to love you
G Am
Ill tell you the only reason why
F (G)
Cause you are on my mind
C
I want to know you feel it
G Am
What do you see when you close your eyes
F (G)
Cause you are on my mind
C
I want to be best
C
I want to be worst
G
I want to be the gravity in your universe
Am F
And I, I want to be there to help you fly
Ill help you fly girl
[ Tab from: https://www.guitartabs.cc/tabs/c/cody_simpson/on_my_mind_crd_ver_5.html ]
C
Oh, the longer that I wait
C
The more that Im afraid
G
That someone's gonna fool your heart and take you away
Am F
Cause I, I finally realized
F (G) C
That I can't get you off my mind
C
Give me the chance to love you
G Am
I'll tell you the only reason why
F (G)
Cause you are on my mind
C
I want to know you feel it
G Am
What do you see when you close your eyes
F (G)
Cause you are on my mind
[Bridge]
Am
Girl I can't live without you
G F
I can't think straight without you, no
F
So tell me what should I do
G C
If I can't get you off my mind
C
Give me the chance to love you
G Am
I'll tell you the only reason why
F (G)
Cause you are on my mind
C
I gotta know you feel it
G Am
What do you see when you close your eyes
F (G)
Cause you are on my mind
C
You're on my mind
G Am
You're on my mind all day and night, oh
F (C)
Cause you are on my mind