Not a perfect tab, I'll try to improve it. For now, you'll need another, higher pitched harp for the chorus.

-6 +6 -5 -4 -6 +6 -5 -4
Call up, ring once, hang up the phone
-6 +6 -5 -4 -6 +6 -5 -4
To let me know you made it home
-3b -4b -4b 5 -5 -4 5 4 -3b 4 -4 -4
Don't want nothing to be wrong with part-time lover

-6 +6 -5 -4 -6 +6 -5 -4
If she isn't with me I'll blink the lights
-6 +6 -5 -4 -6 +6 -5 -4
To let you know tonight's the night
-3 -4b 5 -5 -4 5 4 -3b 4 -4 -4
For me and you my part-time lover

-5 6 -6 6 -6 6 -6 -6 6 -5 6 5
We are undercover passion on the run
-5 6 -6 -6 -6 6 -6 -7 7 -6 -6
Chasing love up against the sun
-5 6 -6 6 -6 -6 6 -5 6 5
We are strangers by day, lovers by night
-5 -5 6 -6 -6 -6 6 -6 -7
Knowing it's so wrong, but feeling so right