Backup (intro):
And that was the biggest sin of all
Connie:
It was a sin the way you lied to me,
The way you broke my heart,
But that was not the biggest sin of all
It was a sin the way you made me cry,
And vowed we'd never part,
But that was not the biggest sin of all

You promised to be faithful,
And I trusted in you,
Oh, what a sin,
You just couldn't be true
But the biggest sin of all,
Was when you made believe you were mine,
When there was somebody else,
All the time

(spoken)

I should have known you didn't love me,
With all those lied that you told,
And I should've known,
That there was another,
When your kisses were so cold,
Yes, I closed my eyes,
Too much in love to see,
Oh, why, did this ever have to happen
to me

(reprise)
Yes, the biggest sin of all,
Was when you made believe you were mine,
When there was somebody else,
All the time
Backup:
All the time