As outlined in a new biography about Gwyneth Paltrow, the actress’s sex life with former boyfriend Ben Affleck was apparently hot and heavy—so much so that, according to the book’s author Amy Odell, they couldn’t keep their hands off of one another, even on set.

Page Six exclusively learned the sex act Gwyneth Paltrow allegedly enjoyed with her then-boyfriend Ben Affleck — but we’re choosing not to name it. But those in the know won’t be surprised that Affleck was into it; He does love Dunkin’.

One day, a crew member went to fetch Gwyneth from her dressing room. The door was ajar, and the runner knocked and entered without waiting for a response, at which point he glimpsed Gwyneth in an intimate moment with Ben, who heard the runner and said, ‘Not now.’