Carlos, bitter and messed up, has one simple life lesson: if you're a single man who falls in love with a married woman, you're doomed. But no one would buy his book for a single sentence, so he starts with his latest romantic disaster with his dance partner, Pamela. Reflecting on his journey, he recounts his search for true love, encountering the infuriating Clare, seeking to escape her marriage, and the alluring Lillian, who wants to add a man to her life. Both relationships are complicated by two factors: his marriage to Charlotte, his true love, and his long-ignored depression, which nearly kills him. Just as he finds contentment, life throws another curveball. After recovering, he returns to Pamela, possibly the one he was always meant to find.