Earlier this month, the former governor of California separated from wife of 25 years Maria Shriver and admitted fathering a child with a long-term member of staff.
Since then, rumours of further indiscretions came to light and former child actress Gigi Goyette claimed to have had an affair with Schwarzenegger in the early 1990s.
According to The Sun, supposed friends of Goyette revealed that the former Little House on the Prairie star had to visit the emergency department of a hospital after a lovemaking session with Schwarzenegger.
"She said Arnold was unbelievably frisky and that she had to go to hospital he was so rough. She was embarrassed turning up with an injury like that," the alleged insider said.
According to reports, Shriver is preparing to file for divorce from Schwarzenegger.