Andrew Wells produced “More than Friends” and co-wrote it with Jason Mraz, Meghan Trainor and Jonathan Green.

After Mraz initially finished his album Know., Wells suggested that he have a songwriting session with Trainor.

"More than Friends" was written during this session, and led to him pushing back "a few departments and their deadlines" to accommodate it on the record.

"[8] A writer for iHeartRadio MMVAs said that it "gives off the vibe of a budding summer romance", noting that its lyrics recount "the feelings of a pair of friends who are interested in taking their relationship to the next level.

[8] Darren Doane directed the music video for "More than Friends" which was released through Mraz's YouTube channel.

[11][12][13] It was released on September 17, 2018, and features a meta concept where a pair of co-workers at the video shoot for the song admit romantic feelings for each other, followed by a celebration of their newfound relationship.

[18] On November 1, 2018, an official dance video, directed by Ryan Hutchins, and starring Nicola Collie and Derek Schiesel, was released.