Head in the Oven (2006)

Cressida is an archetypal femme fatale, embroiled in a love triangle between her true love, Troilus, and the bad boy, Diomedes. Through the lens of Chaucer, Shakespeare, and the Scottish poet Robert Henryson, discover what makes Cressida tick-why does she send Troilus a "Dear John" letter? What doesn't she understand about love?