The woman who claims to have sexted with Alex Rodriguez weeks before he proposed to Jennifer Lopez has an alter ego — porn star Robbin Banx.

Pumped-up blond Playboy model Zoe Gregory claimed to the Sun that the former Yankee slugger sent her pictures of his manhood and asked her to set up threesomes with her pals.

Gregory told the British newspaper that she was introduced to Rodriguez through a friend and they began texting in December, when “he soon began pestering her to meet in person and begging her to bring friends for a threesome.”

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But they never actually met in person, and Page Six has not been able — nor willing — to independently identify what Gregory claims is a close-up shot of A-Rod’s erect, er, rod.

Gregory alleges their contact ceased in January, about a month before he proposed to Lopez, his girlfriend of two years, in the Bahamas on March 9 with a $1.8 million ring.

However, pals of A-Rod’s are laughing off Gregory’s claims, saying nobody has any idea who the British model is and that Rodriguez has never met her.

His rep didn’t comment.

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Charmingly, it turns out that Gregory has a porn alter ego, and appeared in 2018’s “Welcum to the Neighborhood.”

The skin flick’s film company says about the movie on its site, “Hold on to your wallets because Robbin Banx doesn’t take cashier checks — she’s after cold hard cash!”

A-Rod should perhaps take note, should they cross paths in the future.

Meanwhile, on Tuesday, as the strange sexting story broke, Rodriguez was on the New York set for the first day of filming of Lopez’s movie “Hustlers,” in which she plays a stripper opposite Cardi B.

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On Monday on Instagram, he posted a picture of him hugging J.Lo and wrote, “This beautiful woman starts shooting her movie tomorrow . . . I won’t play spoiler, but I can’t wait until you all see how she transforms herself into a completely different character!! . . . Love you baby and continue to shine, fly high and inspire all of us.”

This article originally appeared in Page Six.