Despite the film marking the first feature they've ever done together, Radar has learned the couple has failed at promoting the movie.
Not only did Megan and MGK skip the premiere on Monday in Hollywood, but the duo has also blown off mentioning the movie on social media or in interviews.
The 35-year-old actress recently sat down on Good Morning Today and Jimmy Kimmel Live, but all she talked about was her upcoming thriller, Till Death.
Megan didn't hesitate to bring up that project, but she failed to promote Emmett's Switchgrass on live television.
The movie will be released on Friday, giving Megan and her boyfriend only two more days to come through -- but the damage might already be done.
Hours before the red carpet premiere for Midnight In The Switchgrass, Megan's rep revealed she was skipping the premiere due to L.A.'s COVID-19 spike.
"Due to the recent California mask mandate and rise of COVID cases, Megan Fox will no longer be attending the premiere tonight," the rep told Variety.
Not only did the actress not show up, neither did the musician.
Lala Kent -- who is Emmett's fiancée -- didn't take that well, especially because the couple has been frolicking all over the city recently.
The Vanderpump Rules star seemed to throw shade in Megan's direction while celebrating the movie premiere with several of her co-stars in a since-deleted post.
Standing in front of the movie poster -- which features Bruce Willis and Megan -- Lala covered up Fox's body.
She also blocked out Megan's credit, writing, "So excited for this!" over the actress' name.
Megan and MGK met on the set of the movie, where they fell in love -- but it clearly doesn't have a special meaning to the duo, who has continuously neglected to promote it.
Radar has reached out to both star's reps for comment.