"Two of Us" by Louis Tomlinson
I love the sentiment behind this song. Louis Tomlinson wrote this heartfelt song for his mom, who died in 2016 of leukemia. Just listening to it honestly makes me want to cry. The fact that it's so touching actually makes it hard for me to listen to. I'm not a fan of slower songs or songs that tug at my heart strings, so of the two Tomlinson songs written for his mom, this one gets a lower ranking.