I know an old Country tune that's only 3 chords....EZ as pie!
(I)
I've got a never endin' love for 
(V7)
You. From now on, that's all I wanna
(I)
Do. From the first time we met, I
(V7) 
knew.. I'd sing my never endin song of love for 
(I)
You. 
(I7) 
After 
(IV)
all this time of being alone we can 
(I)
love one another
feel for each other , from now
(IV)
on
(V7)
Feels so good, I can hardy stand it ...
(I)
Never ending love for
(V7)
you, from now on, that's all I wanna
(I)
do. From the first time we met, I 
(V7)
knew.. I'd sing my never ending song of love for
(I)
YOU ! 

Was that the one?