The actor, who has previously confessed that he finds sex scenes traumatic, said that performing in something like Equus would take "courage".
He told OK: "I don’t think I could. Just being on stage would be quite a scary thing, let alone with no clothes on. It takes a lot of courage."
Speaking about his sex scenes in new movie Cherrybomb, Grint continued: "In Harry Potter it was just a kiss, really.
"It was suggestive more than anything. This was a lot more intimate. It was quite nerve-wracking. I was quite nervous about it."
