The protagonist of "Lucy Sullivan Is Getting Married" by Marian Keyes grapples with profound feelings of loneliness. Despite her surroundings and the company of others, she feels an overwhelming sense of isolation, as if she does not belong anywhere. This internal struggle highlights her desire for connection, yet she finds herself dissatisfied with any potential companionship.

Her yearning for a sense of belonging is coupled with a constant feeling of restlessness, as she contemplates her circumstances and wishes for change. The paradox of seeking company while simultaneously feeling disconnected reflects her internal conflict, leaving her in a state of longing and dissatisfaction. Ultimately, this struggle resonates deeply with anyone who has experienced similar feelings of loneliness amidst social interactions.