'The Ultimatum: South Africa' fans are buzzing after Nkateko and Siza shared content hinting at a new romance, years after their on-screen connection and respective break-ups. Reality TV fans in Mzansi are abuzz with speculation that The Ultimatum: South Africa stars Nkateko Mahange and Sizakele “Siza” Dhlamini are now dating, following the emergence of a cosy video that has ignited social media. In the show, Nkateko was originally in a relationship with Khanya Nqolase, who issued the ultimatum, while Sizakele was paired with Lindile Nibe. During the trial marriage phase, Nkateko and Siza’s bond stood out, marked by affection and chemistry that contrasted sharply with their original partnerships and led to tension, including public confrontations. Siza and Nkateko from ultimatum South Africa are dating… I wanna see khanya’s reaction to this😭 pic.twitter.com/ViGQjWPnzb — Storm (@Stormzw11) August 2, 2026The Ultimatum SAThe first season of The Ultimatum: South Africa followed six couples as they tested their relationships through trial marriages.