HELENA: O, wilt thou darkling leave me? do not so.
DEMETRIUS: Stay, on thy peril. I alone will go.

– William Shakespeare

A Midsummer Night’s Dream, Act 2, Scene 2. After Helena pleads with Demetrius to not leave her alone in the forest in the dark, he again threatens her with harm if she doesn’t stop chasing him. He then rushes off alone.