go away from the pretty girl s window you re only wastin time silly boy you should know better you re out of your mind close your eyes when she wears that sweater pay no attention to the way it fits and throw away that silly love letter she ll never answer it and her mama says she can t come out daddy says don t call on the phone big brother tells you to leave her alone leave her alone boy stop it before it starts leave her alone leave the pretty girl alone pretty girls fall in love at the drop of a hat then they fall out of love just like that just like that pretty girl so young and tender you dream about her night and day and just the thought of a sweet surrender it takes your breath away but her mama says she can t come out daddy says don t call on the phone big brother tells you to leave her alone leave her alone boy stop it before it starts leave her alone leave the pretty girl alone you better you better you d better watch your heart oh yeah yeah yeah you better you better watch your heart watch out boy you d better you d better watch your heart stop it now you better you d better stop it now watch out boy you better watch your heart 