Big Brother Titans housemate, Marvin Achi, has been praised online for stopping his South African colleague, Blue Aiva from touching his groin.

Marvin, from Port Harcourt, Nigeria, was chatting with Blue Aiva on Wednesday night when she made a move to touch his lower body.

Intuitively, he stopped her and warned her not to touch him inappropriately. Blue Aiva, who seemed surprised by the rejection, had to ask him why.

In response, the fitness enthusiast said he is saving his body for his girlfriend back at home and warned her against touching his nether region.

“You can’t touch it. I’m reserving it for my girl,” he said.

Upon his reply, Aiva asked curiously, “So you have a girlfriend?”

Marvin retorted: “I didn’t get in here single. She’ll get jealous and hurt if I try anything because she’s watching me. Right now, I’m sure she’s at home, missing me.”

However, the 28-year-old housemate – who previously claimed he is single – said he is keeping his relationship with his girlfriend “light” in case he gets intimate with a girl in the house.

Watch him speak below,