No Strings Attached - (2011)

The rom-com stars Natalie Portman and Ashton Kutcher as Dr. Emma K. Kurtzman and Adam Franklin as teenagers who meet at summer camp and then hook up as friends with benefits as adults.

The comedy contains several scenes that Ashton found to be more than a little embarrassing.

He said: "I was shooting so many sex scenes I was getting tired of it.

"I never thought that anything related to sex would be something I'd get tired of!.

"You're there and you're doing the scene and you're like, 'Do we have to shoot another sex scene?'

"You're always waiting, wondering when the word 'cut' is going to be said. How far are we taking this? Are they going to call cut?"