Along Came Love portrays François, a central gay character, navigating the complexities of his identity in post-war France. The film empathetically depicts his struggle to conceal his homosexuality due to societal pressures, highlighting the personal cost of living a hidden life. It frames external prejudice as the source of his challenges, affirming the worth of his identity despite the difficult circumstances he faces.

The film features Morgane, a trans woman, as an integral member of a family of puppeteers. Her trans identity is portrayed with dignity and complexity, presented as a natural aspect of her character rather than a source of conflict or ridicule. The narrative affirms her worth and her place within the family's artistic and personal struggles, such as her involvement in their puppet shows.

The film portrays the complexities of forming a blended family from single-parent backgrounds, normalizing these alternative structures and depicting fluid gender roles within the new family unit.