Mahlangu and Lerato allegedly killed Sithebe at their marital home in Soshanguve in January 2022 and burnt the body.
Lerato allegedly passed off Sithebe’s body as her husband’s, buried it and received an insurance payout. It is alleged she got half a million from a life cover policy. The two are currently on trial for murder.
On Tuesday, Mahlangu took the witness box. He told the court that the day believed to be one on which Sithebe died is the day he learnt about Lerato cheating on him.
Mahlangu said he learnt of the affair as they were preparing to go and have New Year's Day lunch at his mother's place.
“We were preparing to go to my mother's house for New Year's Day lunch with my wife and two kids.
On the day, I wasn't happy because [in the morning] me and my wife had a fall out because I learnt that my wife was cheating and I had have been suspecting it but she kept on denying it,” he said.
Mahlangu said during lunch, he sat next to his older sister because he could not sit next to Lerato after finding out about the affair.
“Normally I sit next to my wife but that day I was not OK with my wife,” he said.
He said that after lunch they left his mother's place because Lerato had to go to Mpumalanga.
On their way to the taxi rank where Lerato was supposed to catch a taxi to Mpumalanga, she kept on trying to make him understand why she was cheating, Mahlangu said.
He said after dropping her off he took the car to a mechanic and left it there because it needed to be fixed. From there he then went to their marital home, took a few clothes, and went to Silverton at a friend's place as he needed to think, Mahlangu said.