The Boy Downstairs is a 2017 American romantic comedy-drama film written and directed by Sophie Brooks, in her feature directorial debut.

The film stars Zosia Mamet, Matthew Shear, Deirdre O'Connell, Sarah Ramos and Diana Irvine.

Ben wants a long-term, happy marriage like his parents, but Diana plans to move to London and does not want distractions or commitments.

She discourages his suggestion of moving with her, and stuns Ben by ending the relationship before leaving.

The site's critical consensus reads, "The Boy Downstairs finds a few fresh moments in its familiar setup and benefits from Zosia Mamet's charismatic performance, both of which are enough to keep viewers interested.