YouTuber Jimmy Donaldson's (MrBeast) fiancée Thea Booysen is a 27-year-old gamer, content creator & author from South Africa. Booysen holds degrees in psychology and law from Stellenbosch University and a master's degree in neuropsychology from the University of Edinburgh. She authored 'The Marked Children' novel and is also an esportscaster for 'Cyberpunk 2077' video-game creator CD Projekt Red.