Max Saddler has never been in love-but she's studied it like it's her thesis.

At 23, she's starting grad school with a laser focus on academics and zero interest in messy emotions. Love, after all, is unpredictable-and Max prefers rules, structure, and solitude. Her autism makes social situations hard enough. Dating? No, thank you.

Then Ruby Satterwhite crashes into her life like a glitter bomb.

Beautiful, extroverted, and intimidatingly popular, Ruby is everything Max isn't-and everything she can't stop thinking about. The two are oil and water from the start... until a group project forces them into proximity, and something unexpected starts to flicker between them. Max knows the theories. She's read the research. But when it comes to love, the rules are about to change.

Read the complete Rulebooks trilogy:
The Rules of Love
The Rules of Engagement
The Rules of Parenthood