The Love Hypothesis (The Love Hypothesis #1) (Updated Version) - Ali Hazelwood

Now see Adam pine for Olive in a special bonus chapter! When a fake relationship between scientists meets the irresistible force of attraction, it throws one woman’s carefully calculated theories on love into chaos. As a third-year PhD candidate, Olive Smith doesn’t believe in lasting romantic relationships—but her best friend does, and that’s what got her into this situation.