Stella Lane thinks math is the only thing that unites the universe. It doesn’t help that Stella has Asperger’s and French kissing reminds her of a shark getting its teeth cleaned by pilot fish. Her conclusion: she needs lots of practice—with a professional. Which is why she hires escort Michael Phan. The Vietnamese and Swedish stunner can’t afford to turn down Stella’s offer, and agrees to help her check off all the boxes on her lesson plan. Before long, Stella not only learns to appreciate his kisses, but crave all of the other things he’s making her feel.