Significant Other is an American play written by Joshua Harmon, which premiered Off-Broadway in 2015, followed by a Broadway production at the Booth Theatre in Spring 2017.

Lindsay Michelle Mendez is an American actress and singer, best known for her work in American musical theatre. She won the 2018 Tony Award for Best Featured Actress in a Musical for her performance as Carrie Pipperidge in a Broadway revival of Carousel. Her other credits on Broadway include Elphaba in Wicked, Godspell, and Jan in Grease.