Du sollst nicht deines Freundes Weib lieben!

Thou shallt not love your friend's woman!

-------------Old print (19th Century?) in a shopping arcade in Neuruppin, Germany 2005. Author of the poem: Theodor Fontane ? (1819-1898)----------------and the lyrics of a German folk song: "Du, Du liegst mir im Herzen"-----https://en.wikipedia.org/wiki/Du,_du_liegst_mir_im_Herzen

Done