Lyrics:

Well, I guess you must have had a change of heart
You don't treat me like you did at the start
Your campaign of love was quite a work of art
Now I guess you must have had a change of heart

Guess, I took too much for granted anyway
But it's just 'cause I'd believe those things you'd say
Not so long ago you swore we'd never part
Now I guess you must have had a change of heart

So goodbye to all those castles in the air
And goodbye to all those plans we used to share
They were fragments of a dream that fell apart
Now they're gone because you had a change of heart
They're all gone because you had a change of heart