Rival physicists collide in a vortex of academic feuds and fake dating shenanigans in this delightfully STEMinist romcom from the New York Times bestselling author of The Love Hypothesis and Love on the Brain. The many lives of theoretical physicist Elsie Hannaway have finally caught up with her. By day, she's an adjunct professor, toiling away at grading labs and teaching thermodynamics in the hopes of landing tenure. By other day, Elsie makes up for her nonexistent paycheck by offering her services as a fake girlfriend, tapping into her expertly honed peoplepleasing skills to embody whichever version of herself the client needs. Honestly, it's a pretty sweet giguntil her carefully constructed Elsieverse comes crashing down. Because Jack Smith, the annoyingly attractive and arrogant older brother of her favorite client, turns out to be the coldhearted experimental physicist who ruined her mentor's career and undermined the reputation of theorists everywhere. And he's the same Jack Smith who rules over the physics department at MIT, standing right between Elsie and her dream job.