The protagonist in "Shopgirl" comes to a painful realization about his relationship with Mirabelle. He understands that his desire for only a small part of her, rather than embracing her entirely, has caused harm to both of them. This limited perspective has led to emotional damage and conflict in their connection.

This moment of insight highlights the complexity of human relationships and the challenges of truly understanding another person. The protagonist grapples with justifying his actions, ultimately concluding that the realities of life can lead to unforeseen consequences. It underscores a message about the importance of wholeness in love and understanding.