Lea Michele has revealed that she once showed her curious Glee co-star Jonathan Groff her "whole vagina".
Groff, who is gay, starred as Jesse St James - love interest to Michele's Rachel - across all six seasons of the popular show.
The pair had previously become close friends appearing in the Broadway musical Spring Awakening, and in a new HBO documentary Michele makes a revelation about how deep their bond runs.
"Jonathan and I became so close. We were so intertwined," she tells the camera.
"At one point, I literally showed him my whole vagina. He was like, 'I've never seen a woman's vagina before. Would you show me?' And I was like, 'Sure.'
"And I took a desk lamp... and showed him. That's how close we are."
She added: "I've never seen Jonathan naked. I've never seen his penis."
The film, Spring Awakening: Those You've Known, is released on May 3.
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