Here is a glimpse into the tangled web of those romantic storylines:

For three years, Liam has sent Mia anonymous roses. Tonight, he’s finally planning to reveal himself, but he realizes Mia is flirting heavily with a man in the exact same costume Liam is wearing. [3]

Someone is slipping handwritten poems into guests' pockets. Is it the mysterious host, or someone hiding in plain sight? [13, 14]

Rival lawyers Ben and Clara spend the night trying to out-wit and out-spook each other. By midnight, the bickering turns into a heated conversation in the library that has nothing to do with the law. [6, 7]

A long-term couple realizes tonight is the end. As the party reaches its peak, they find themselves having a quiet, heartbreaking talk in the moonlit garden. [15]

Julian and Sarah haven’t spoken since their messy breakup in May. Julian, dressed as a tragic phantom, keeps catching Sarah’s eye through her Venetian lace mask. Is it lingering resentment, or the spark they both swore was dead? [1, 2]

To avoid their families' prying questions, Nate and Maya agreed to go as a "couple." Halfway through the night, the act starts feeling dangerously real. [11]