Having revealed earlier this month that he also enjoyed threesomes with bisexual bandmate Duncan James during the height of Blue's fame, he has now admitted to romping in a moving cab.
"I once had sex in the back of a taxi. I had to give the driver an extra tip after that," he told Now.
"It was in the morning so I'm surprised he didn't crash the car."
However, the 26-year-old insisted that he has turned over a new leaf after the birth of 16-month-old son Rayn with fiancée Samantha Miller, and has ditched the party lifestyle.
"I don't even smoke weed and hardly drink," he said.