Schwarzenegger promised he’d be back, but what an entrance!

Former California Gov. Arnold Schwarzenegger, newly estranged from his wife of 25 years and seeking to resume his Hollywood career, has acknowledged fathering a child more than a decade ago with a member of his household staff.

The revelation came a week after Schwarzenegger — the Austrian-born former bodybuilder-turned-film star — and wife Maria Shriver, a journalist and member of the Kennedy dynasty, jointly announced their marital split.

Schwarzenegger, who left office in January and may be about to revive his action movie career with a new “Terminator” film, admitted he fathered a child out of wedlock in response to questions by the Los Angeles Times.

“After leaving the governor’s office I told my wife about this event, which occurred over a decade ago,” Schwarzenegger said in replying to the Times. A Schwarzenegger spokesman later gave a copy of the statement to Reuters.

“I understand and deserve the feelings of anger and disappointment among my friends and family. There are no excuses, and I take full responsibility for the hurt I have caused. I have apologized to Maria, my children and my family. I am truly sorry,” Schwarzenegger, 63, said in the statement.