Robert Pattinson is pretty shy about sex scenes -- so much so that he has trouble actually acting in them, and thus has to actually do it. And by "do it," we mean, well, "do it."

"My orgasm face is recorded for eternity," Pattinson confessed to Interview magazine (via Queerty). When asked why he doesn't fake it (because, you know, that would actually be acting), he explained, "[It] just doesn't work, so I pleasured myself in front of the camera."

Translation for those of you who may not be with us: Pattinson made out with dudes and masturbated for real. On camera. In 'Little Ashes.' (We bet the movie's Netflix numbers are going up already.)

Pattinson revealed that the 'Little Ashes' production was "the worst" because he found strolling about the set with naked actors milling around to be "mortifying."

No wonder why he passed on '50 Shades of Grey.' You can check out some of Pattinson's 'Little Ashes' scenes here, curiously set to Jordin Sparks' 'No Air.'

More From StarCrush