Beatrice: "I would rather hear my dog bark at a crow than hear a man swear that he loves me"
I.i.121
Beatrice doesn't want to hear anyone, specifically Benedick swear he loves her. She dismisses the whole possibility of love.
Consider the title: Much Ado about Nothing
The title of the play hints at unnecessary problems, perhaps resulting from miscommunication.
Or when considering the meaning of "nothing" in Elizabethan terms as "noting," it could mean taking note of small things and missing out on the big picture.