updated 09/28/2012 AT 12:40 PM ET
•originally published 09/28/2012 AT 2:20 PM ET
Opening up for the first time since his marriage collapsed with the revelation that he fathered a child with a housekeeper, Arnold Schwarzenegger acknowledges how badly he hurt wife Maria Shriver and their family.
“I think it was the stupidest thing I’ve done in the whole relationship,” Schwarzenegger, 65, replies. “It was terrible. I inflicted tremendous pain on Maria and unbelievable pain on the kids.”