The Thompson Square duo recorded this song for The Best of Me soundtrack. Keifer Thompson said: "Our manager passed the song along and told us about the opportunity, and we listened to the song and once we heard it, we loved it."
Shawna Thompson added: "As soon as I heard it was for The Best of Me, I totally freaked out because I had just read the book not too long ago."
"Lean On" was originally sent by Major Lazer to both Rihanna and Nicki Minaj's camps as a slower reggae track. After both parties rejected the tune, Major Lazer recruited Danish singer MØ to supply vocals and recorded it themselves.