Timeline and Summary

1.2: Cressida chills with her servant and scopes out the soldiers returning home from the battlefield.
1.2: She tells her uncle Pandarus she's not interested in Troilus but later confesses to us that she's in love with him and has been playing hard to get.
3.2: Cressida invites Troilus into her house and declares she'll be faithful to him forever and ever.
3.2: The two lovebirds spend the night together.
4.2: A bunch of dudes show up to inform Cressida that she's been traded to the Greeks and has to leave her home ASAP.
4.5: When Cressida arrives at the Greek camp, she flirts with the commanders as they take turns kissing her.
5.2: Cressida meets with Diomedes and agrees to become his not-so-secret lover, sealing the deal by giving him a love token that belongs to Troilus.
5.2: Gee, Cressida says. Turns out she feels really bad about betraying Troilus after all.