The 31-year-old actor made the revelation during an interview with People, where he sat down with his former co-star on the show, Aimee Lou Wood.

They were promoting their new partnership with Venmo, ahead of the launch of the brand's debit card and expanded checkout features.

He said: "I don't know if this ever happened to you, Aimee – I sent it in our group text from White Lotus – but I have people that sent me money on Venmo during episodes of 'White Lotus'.

"It was really strange."

In the show, Schwarzenegger plays the eldest son in an extremely rich family about to face ruin, over fraud allegations.

He added: "I sent it all back, don't worry. But I did. I got a lot of people that sent me money."

Wood, 31, said her own memories of filming involved a rather expensive coconut habit while on location in Thailand. 

"It was chronic," she said, adding: "I could not stop with the coconuts. I just absolutely loved them! I was so hydrated. I think I was overly hydrated, actually."

The pair spent seven months filming the hit HBO series last summer, and said their new work with Venmo came at the perfect time – days after they had been discussing the possibility of collaborating again.

"The whole experience was just really fun and put us in a fun situation to get to dance with each other", Schwarzenegger said.

Wood agreed, and reflected on the intense bond formed during the extended production, admitting to feeling "separation anxiety" after filming wrapped. 

She said: "Seven months all of us together, in the same place, and then I went back to England and it was so lonely."

The two stars have remained close, spending significant time together in recent weeks, working on the same shoots.