HERMIA: I frown upon him, yet he loves me still.
HELENA: O, that your frowns would teach my smiles such skill!
– William Shakespeare
A Midsummer Night’s Dream, Act 1, Scene 1. Hermia tells Helena how she gives disapproving looks to Demetrius, but he still loves her, an example of situational irony. Helena responds, jealously wishing that her smiles had the same effect on Demetrius as Hermia’s frowns.