The track was written by with the M.O. trio along with Ferdy Unger Hamilton, Nicholas Listrani, Ryan Sudlow, and Stephen and Fred Gibson. The girls told Sugarscape
about the song:
"'Who Do You Think Of?' was inspired by old school songs like Ne-Yo's 'Do You' and Chingy and Tyrese's 'Pullin' Me Back.' It's relatable for anyone who's been back and forth in a relationship, it's asking who you're missing."