"Deve ser Horrível Dormir sem Mim" (Portuguese: [ˈdɛvi ˈseʁ oˈʁivɛw doʁˈmiʁ ˈsẽj̃ ˈm], It Must Be Awful to Sleep Without Me) is a song by Brazilian singer Manu Gavassi featuring singer and drag queen Gloria Groove, released on August 21, 2020, by Universal Music.

On August 12, 2020, Gavassi deleted all her photos from Instagram and the next day, she changed her profile name to her alter ego Malu Gabatti, a screenwriter and director, in addition to changing her hair color.

[1] Manu announced a partnership with Gloria Groove through an action/prank on TikTok,[2] with the song being released on August 21, 2020.

[3] The video for the song was also released on August 21, 2020, being directed by Manu Gavassi herself, being a 10-minute short film.

The music video also features the participation of the actor — and Gavassi's ex-boyfriend — Chay Suede, actress Laura Neiva, producer Raony Phillips and actor Bruno Anacleto.