The Kiss Quotient is a heartwarming and refreshing debut novel that demonstrates one thing with certainty: there's not enough data in the world to predict what will make your heart tick. Stella Lane believes math is the only thing that unites the universe. She devises algorithms to predict customer purchases—a job that has given her ample financial resources but significantly less dating experience than the average thirty-year-old.

Stella's Asperger's makes social interactions challenging, with French kissing evoking images of a shark getting its teeth cleaned by pilot fish. Her logical conclusion: she needs plenty of practice—with a professional. Enter Michael Phan, a Vietnamese and Swedish escort who can't afford to refuse Stella's proposition. Agreeing to assist her with her intimate lesson plan, Michael helps Stella explore everything from foreplay to more adventurous positions.

As Stella begins to enjoy his kisses and yearn for more of the sensations he elicits, their straightforward arrangement starts to make an unexpected kind of sense. And the emerging pattern will persuade Stella that love is indeed the best kind of logic.