Cunning Linguist (Underground Sorority #0.5)
Rachel Shane

But then she meets Liam, a ruggedly cute acting major who has an idea for how Fallon can win over the professors and gain back her notoriety. An idea that involves a nude mold of his exceptional body. In exchange, she agrees to help with his own project: winning back the ex-girlfriend who dumped him only hours before. But the more time Liam and Fallon spend together, the harder she falls for the guy who's still hung up on someone else.
This is a standalone prequel novella. It can be read out of order. The events in this book take place a year before book 1 begins.