 On his birthday, Frasier is seized with crippling back pain. Niles wonders if he s stressed, and while recovering at home, Frasier muses aloud about why he s unhappy. One reason is that he s still single, and he will miss Daphne s companionship after she gets married. Daphne, overhearing, misunderstands him to mean that he has feelings for her. Frasier resolves the confusion, but while he s doped up on painkillers, lets slip to Daphne the truth about Niles s feelings for her.