Big Brother Titans stars Lukay and Ipeleng have become the Titans’ first housemates to engage in sexual intercourse.

Many viewers, and even some of the housemates, would be surprised because they are among the most reserved housemates on the show.

The two South African housemates were caught having sex in the garden after the Pool party on Thursday night.

Marvin, Jaypee, and Yvonne were among the other housemates who watched the show because their moaning drew everyone’s attention.

Lukay, 37, and Ipeleng, 25, started showing signs of intimacy earlier in the afternoon when they were seen kissing in public.

Ipeleng and Lukay are now officially the first housemates to have sex on the reality show, with the 5′′9 feet tall female housemate seen disposing of the used condom and washing her hands.