If you had asked me, I'd have told you   There ain't nothin' I don't know   Like no matter how I hurt her, I just knew she'd never go   Up until the day she left me, I'd have sworn I'd never crawl      Well, it's amazing just how much I've learned   Since I thought I knew it all   Figured she'd be much too frightened, to make it on her own   So I was sure that she'd come cryin'      After just one night alone   I kept waitin' by the telephone, so certain she would call   It's amazing just how much I've learned   Since I thought I knew it all      I never knew a broken heart   Could turn you inside out   I didn't know, that I didn't know   What love was all about      If she came walking through the front door   There's a million things I say   Like I love you and I missed you, please don't ever go away.   And if you would just forgive me      I'll be at your beck and call   'Cause it's amazing just how much I've learned   Since I thought I knew it all   It's amazing just how much I've learned   Since I thought I knew it all