She was my once-in-a-lifetime, happy ending come true Oh, I guess I should've told her I thought she knew She said I took her for granted It's the last thing I would do Oh, I never understood it I thought she knew I thought she knew my world revolved around her My love light burned for her alone But she couldn't see the flame Only myself to blame I should've known I should've known A heart full of words left unspoken Now that we're through I'd sell my soul to have this silence broken Oh, I thought she knew I thought she knew my world revolved around her My love light burned for her alone But she couldn't see the flame Only myself to blame I should've known I should've known She was my once-in-a-lifetime, happy ending come true Oh, I guess I should've told her I thought she knew I thought she knew Oh, I thought that she knew