I'm not quite sure what's goin' on  But all day through and all night long  I've been thinkin' about you  I've been thinkin' about you    The look in your eyes when you smile that way  The sound of your voice sayin' my name  I've been thinkin' about you  Just keep thinkin' about you  This single minded fascination I've got   Do you call it love   If you don't then what  All I know is I don't know what you've done   And this train ain't about to jump the track that it's on     In the back of my mind there's a secret place   But the whole world knows by the smile on my face  I've been thinkin' about you  Can't stop thinkin' about you    I know it's crazy callin' you this late  When the only thing I wanted to say is  I've been thinkin' about you  Just keep thinkin' about you  I Can't stop thinkin' about you  Always thinkin' about you