I must be going (don't go)
  My heart is showing (don't go)
  I better hurry awa-ay-ay-ay-ay
  If I don't leave I'll be sorry
  What will my Mary say?
  
  Your lips are thrilling
  My arms are willing
  I know that I shouldn't stay-ay-ay-ay-ay
  If I don't leave I'll be sorry
  What will my Mary say?
  
  What would I do if she should need me
  And find me kissing you?
  She's always trusted me completely
  Her poor heart would bre-ea-eak in two
  
  I must be going (don't go)
  My heart is showing (don't go)
  I better hurry awa-ay-ay-ay-ay
  If I don't leave I'll be sorry
  What will my Mary say?
  
  If I don't leave I'll be sorry
  What will my Mary say?
  
  (Don't go)
  (Don't go)