Credits to crmrz, I'm just making it easy to find and providing the strumming pattern.
[Intro]
D Bm G
D Bm G
D Bm G
[Chorus]
D Bm G
Please don't tell her I have a girlfriend
D Bm G
Please don't tell her I have a girlfriend
D Bm G
'Cause it's so hard, can't even pretend
G
That I only want to be her friend
[Pre-Verse]
D Bm
Well, I don't deserve it
G
You know that it's true
D Bm
But she said that she would
G
And you know I would too
A A7
Oh oh, what am I gonna do?
D Bm G
Please don't tell her I have a girlfriend
D Bm G
Please don't tell her I have a girlfriend
D Bm G
'Cause it's so hard, can't even pretend
G
That I only want to be her friend
D Bm
Well, I know that actions
A
Speak louder than words
D Bm
And thinking is bad
A
But doing's much worse
A A7
Oh oh, but I'm so perverse
D Bm G
Please don't tell her I have a girlfriend
D Bm G
Please don't tell her I have a girlfriend
D Bm G
'Cause it's so hard, can't even pretend
A A7
That I only want to be her friend
Bm G A
Well, I know I can keep a secret
Bm G A
I know I can keep a secret
Bm G A
Can you keep my secret?
N.C.
Oh, please don't tell her
N.C.
That I have a girlfriend
N.C.
'Cause it's so hard I can't even pretend
[Outro]
D Bm G
Please don't tell her I have a girlfriend
D Bm G
Please don't tell her I have a girlfriend
D Bm G
'Cause it's so hard, can't even pretend
A A7
That I only want to be her friend