"Heart to Break" is a song by American singer-songwriter Julia Michaels, released in 2018. The song explores the ups and downs of a relationship that is on the brink of ending. The lyrics express the speaker's intense emotions and desperation to keep the relationship alive, even though they feel their partner is unresponsive and cold. The chorus repeatedly asks the question, "How much does it take for a heart to break?", highlighting the speaker's fear of losing the love they have worked so hard to build. The song also touches on the idea that love is not always easy, and that despite the challenges, the speaker and their partner have a deep and meaningful connection. Overall, "Heart to Break" is a powerful and emotional song about the vulnerability of love and the fear of losing it. The lyrics, combined with Michaels' soulful vocals, create a deeply moving and relatable experience for listeners.