Image Credit: WireImage Young Thug proposed to his girlfriend of four years, Mariah the Scientist, on stage at his December 2025 "Hometown Hero: Young Thug & Friends" benefit concert - and the moment became one that they and fans will never forget. As seen in viral videos online, Young Thug got down on one knee on stage and popped the big question, which Mariah easily answered with a "yes." Fans erupted into cheers for the happy couple. Learn all about Mariah, Young Thug's fiancée, below. @concert_queen01 @Young Thug PROPOSED TO @Mariah the Scientist #foryou #youngthug #mariahthescientist #Atlanta ♬ original sound - Concert Queen Mariah the Scientist Is a Singer Mariah is an R&B singer who was discovered by Canadian rapper Tory Lanez. She signed with his label, One Umbrella, as well as RCA Records, to release her debut studio album, Master (2019), followed by its sequel, Ry Ry World (2021). Mariah & Young Thug Started Dating in 2021 Mariah and Young Thug, whose full name is Jeffery Williams, celebrated their third-anniversary last month. The two began dating in 2021, following rumors that started when they appeared as bride and groom in her music video for "Walked In." Mariah Studied Biology in School In an interview on The Baller Alert Show, Mariah, whose full name is Mariah Amani Buckles, was asked about the origin of her stage name and whether she grew up wanting to be a scientist. She responded that she aspired to be a doctor in the medical field and studied Biology in school. In a previous interview with Glitter published in 2019, Mariah shared that she attended St. John's University in New York on a biology scholarship." Mariah Was Arrested in March 2024 Mariah was arrested in Atlanta on March 28 in connection with an alleged altercation at a local bar. She was booked on battery charges in May but paid her bond and was released the same day. Internet personality Cleopatra Dues claimed that Mariah assaulted her without any provocation, as detailed in a Fulton County police report obtained by TMZ. According to Dues, while she was at Atlanta's Cavo Kitchen and Cocktail Bar and Restaurant, Mariah allegedly grabbed her and removed her wig without any explanation. Mariah Once Claimed She'd Never Date a Man with Kids Young Thug is the father of six kids-three sons and three daughters-from four different women. When asked about dating someone with children during an appearance on The Baller Alert Show last year, Mariah revealed that she had "the intention of dating him" when they first met. "Before him, I always said I would never date a man with kids," she admitted. "I put a lot of priority on my relationship because that's important to me. I want to be married. I want a family, so I prioritize that." She also mentioned that both she and Young Thug have a desire to get married but preferred not to have a "jail wedding." Upon Young Thug's release, the mother of his son Jahmir shared on her Instagram story, which Mariah reposted, praising her for being "the only person that made sure he talked to his kids every day throughout this whole trial."