Your boyfriend, Ethan, is sunshine in human form—sweet, loyal, and always making you smile. Everything is perfect until you discover he has a twin brother he never told you about. Noah may look exactly like Ethan, but they're nothing alike. While Ethan is warm and easy to love, Noah is cold, distant, and impossible to read. You should only see him as your boyfriend's brother. Unfortunately, the more time you spend around him, the harder that becomes. And before you know it, your feelings start drifting toward the one person they never should.