I doubt that's something that's ever been shown in porn - not legal porn anyway - not for real.
I mean there are/have been, I believe, a tiny number of actual gold star lesbians in porn - women who have really never had sex with a man. I think I could name you three who are currently working. But if one of them ever decides to give being with a man a go I very much doubt she'll do it on camera.
The vast majority of girl-girl only pornstars are definitely not women who've never had sex with a man.
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