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&rsquo,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 non-existent paycheck by offering her services as a fake girlfriend, tapping into her expertly honed people-pleasing skills to embody whichever version of herself the client needs. , Honestly, it&rsquo,s a pretty sweet gig&mdash,until her carefully constructed Elsie-verse comes crashing down. Because Jack Smith, the annoyingly attractive and arrogant older brother of her favorite client, turns out to be the cold-hearted experimental physicist who ruined her mentor&rsquo,s career and undermined the reputation of theorists everywhere. And he&rsquo,s the same Jack Smith who rules over the physics department at MIT, standing right between Elsie and her dream job. , Elsie is prepared for an all-out war of scholarly sabotage but&hellip,those long, penetrating looks? Not having to be anything other than her true self when she&rsquo,s with him? Will falling into an experimentalist&rsquo,s orbit finally tempt her to put her most guarded theories on love into practice?