Personally i use C# in variation 2 of 14, and D# in variation 3 of 14.
[Verse]
C#
Don't wanna call you 'cause I miss you too much
Fm
Don't wanna play 'cause I'm outta luck
F# C#
In this town, in this town
C#
Tomorrow I'll be in another state
G# F#
I get so nervous 'cause I just can't wait to see you
C#
I guess I need you
[Pre-Chorus]
A#m
Don't believe everything you read about me
C#
People talk but it doesn't matter what they say
A#m F#
I know you're always waiting for a status update
D#
It comes a little too late
[Chorus]
F# C#
Can't stop thinking, I'm to blame
G#
'Cause you're ready for the next one
F# C#
The distance killed the burning flame
A#m F#
And I can't stop myself from trying to figure out
C# G#
The fastest way to work this out
F#
'Cause I'm ready for you
G#
Three words can't fix us anymore
[Verse]
C#
I believe you've been working nine to five
G# F#
I know you miss me but you try to hide your feelings
C#
'Cause I gave you reasons
C#
I remember when you took your breaks
G# F#
You called to tell me all about your day
C#
I miss that, why can't we fix that?
[Pre-Chorus]
A#m
Don't believe everything you read about me
C#
People talk but it doesn't matter what they say
A#m F#
I know you're always waiting for a status update
D#
It comes a little too late
[Chorus]
F# C#
Can't stop thinking, I'm to blame
G#
'Cause you're ready for the next one
F# C#
The distance killed the burning flame
A#m F#
And I can't stop myself from trying to figure out
C# G#
The fastest way to work this out
F#
'Cause I'm ready for you
G# A#
Three words can't fix us anymore
A#m C#
Can't fix us anymore
G# A
Three words can't fix us anymore
F# G#
F# C#
Can't stop thinking, I'm to blame
G#
'Cause you're ready for the next one
F# C#
The distance killed the burning flame
F# C#
Can't stop thinking, I'm to blame
G#
'Cause you're ready for the next one
F# C#
The distance killed the burning flame
A#m F#
And I can't stop myself from trying to figure out
C# G#
The fastest way to work this out
F#
'Cause I'm ready for you
G#
Three words can't fix us anymore
F# C#
Can't stop thinking, I'm to blame
G#
'Cause you're ready for the next one
F# C#
The distance killed the burning flame
A#m F#
And I can't stop myself from trying to figure out
C# G#
The fastest way to work this out
F#
'Cause I'm ready for you
G#
Three words can't fix us anymore