"Don't Let It Break Your Heart" is a song by English singer-songwriter Louis Tomlinson, and the fourth single from his debut studio album Walls.

"[3] Saskia Postema of Euphoria Magazine called the song "an honest and empowering anthemic ballad" and praised Tomlinson's "conversational and simple yet colorful narration of his own feelings" that "conveys emotion both in his writing and in his voice".

[1] Writing for MTV, Patrick Hosken described "Don't Let It Break Your Heart" as "an ode to perseverance that finds rainy-guitar verses giving way to a full-throated, chant-ready chorus that could sit alongside the biggest One Direction arena anthems like "Steal My Girl.

[6] The music video, starring actor Geoff Bell and directed by Charlie Lightening, was released on 2 December 2019.

It continues the narrative from Tomlinson’s previous two videos, "Kill My Mind" and "We Made It", a story about two lovers on the run amid the emotional wreckage of a criminal entanglement.