"Don't Let It Break Your Heart" by Louis Tomlinson I truly didn't think Louis Tomlinson would give me a song better than "Kill My Mind," but then "Don't Let It Break Your Heart" happened. This song is the anthem I've been desperately needing from him, and I've already got it playing on repeat. Tomlinson just keeps getting better and better and proving to the world that he's a phenomenal songwriter and beautiful performer.