"Sigh no more, ladies, sigh no more, men were deceivers ever" is sung by Balthasar, a musician of the household of Leonato.  
In this play, one character answers another's question "Can you make no use of your discontent?" with the reply "I make all use of it, for I use it only".  That character asks "What is he for a fool that betroths himself to unquietness?" upon learning of the engagement of two characters.  Another character in this play demands that the audience "remember that I am an ass" and tells another "thou villain, thou art full of piety".  Marriage is scoffed at by another character who declares "he that is more than a youth is not for me, and he that is less than a man, I am not for him".  "Sigh no more, ladies, sigh no more, men were deceivers ever" is sung by Balthasar, a musician of the household of Leonato.  At the bidding of the villainous Don John, Borachio has sex with Margaret by a window where they are witnessed by Don Pedro and Claudio, causing the latter to accuse Hero of unfaithfulness on their wedding day.  FTP, name this Shakespearean comedy featuring Beatrice and Benedick.
In this play, one character answers another's question "Can you make no use of your discontent?" with the reply "I make all use of it, for I use it only".  
Much Ado about Nothing