 Trainor and Legend sang "Like I'm Gonna Lose You" on "The Tonight Show Starring Jimmy Fallon" on May 21, 2015.She performed the track solo in a set for "The Today Show" on May 22, 2015, along with "Dear Future Husband", "All About That Bass" and "Lips Are Movin".An a cappella rendition of the song by Trainor and Legend premiered on May 27, 2015, by "Entertainment Weekly", as part of Pop TV's "Massive Musical Mash-Up".