THE scorned ex-girlfriend of an S&M “master” to a Catholic priest went right to the top and sent the Archbishop of New York e-mails that were hardly suitable for church — laying out details of the romps that were allegedly funded with cash skimmed from the poor box.

Tatyana Gudin shared with The New York Post her message to Timothy Cardinal Dolan that recounted how the Reverend Peter Miqueli allegedly wore a locked Lucite chastity belt along with a dog collar during pricey sessions with his bodybuilder lover.

She also claimed to the pope’s right-hand man in America that Miqueli had an interfaith fantasy of being humiliated in Borough Park, Brooklyn, in front of a “nice Jewish girl.”

Miqueli, meanwhile, remained a pastor of St. Frances de Chantal in the Throggs Neck neighbourhood of The Bronx on Friday.

Gudin wrote to Dolan about Miqueli’s tastes in high-end booze and claimed he paid for many of their luxuries by putting his boyfriend in charge of a church thrift shop.

“Miqueli loved to enjoy $300 bottles of Scotch,” she wrote. “All on a priest’s $2,474-a-month salary.”

She wrote to Dolan that Miqueli fired the St Frances thrift-shop staff and installed his lover Keith Crist to run it. She said Crist turned it into a money-making machine but “only reported $50,000/year.”

“To add insult to injury, to cover his imbezzling [sic] activities, Miqueli would every so often fire whoever was the right-hand employee in the thrift shop, by accusing them of ... Theft!” she wrote.

On Thursday, Miqueli’s parishioners filed a fire-and-brimstone lawsuit that claimed the pastor swiped at least $US1 million in church funds so he could enjoy the favors of his $US1,000-per-session “homosexual sex master,” identified in the suit as Crist.

The suit also claims Miqueli took trips to Florida and Italy with money snatched from collection plates and from an account for a new organ at St. Frances Xavier Cabrini on Roosevelt Island, where he was stationed before The Bronx.

Gudin, Crist’s former girlfriend and confidante of 10 years, said she sounded the alarm about Miqueli in her e-mails to Dolan over the summer.

The first one began with, “I would like to tell you who your priest, Father Miqueli, really is.”

“Keith has been Father Miquelis gay, for-pay prostitute,” the e-mail reads.

“More specifically, Father Miqueli is Keith Crist’s toilet slave,” Gudin wrote Dolan.

“If you don’t know what that means, Cardinal, I will break it down for you ... Keith Crist uses Father Miqueli as his toilet, and Father Miqueli drinks his piss during their weekly, 3 day get-togethers when they take off to Father Miquelis house in Brick, NJ, far away from prying eyes.”

Miqueli bought the white brick ranch house for $264,000 in embezzled cash in 2009, the lawsuit alleges.

The house features a hot tub in the back and a statue of the Virgin Mary out front.

“Father Miqueli has a full-blown dungeon in the house,” she wrote Dolan.

“Master,” she said Miqueli would e-mail Crist. “I cant wait to get to Jersey tonight, so I can drink your piss.”

Gudin told The Post, “All the juicy stuff is what Keith would tell me face to face.”

“We would be laying in bed together and he would say, ‘Tatyana, I have to show you this.’ I would be looking at those e-mails for sport,” she said.

“This one is my favorite,” Gudin wrote the cardinal of the following e-mail: “Master, I don’t really like drinking your piss, but I do it bc i know it pleases you.”

A reply e-mail from a New York Archdiocese lawyer confirms that Gudin’s e-mails were received by the archdiocese.

The parishioners’ lawyer, Michael Dowd, said Gudin’s e-mails to Dolan and her personal recollections informed much of the lawsuit.

The priest and his boy toy spent $60,000 in 2012 for “illicit and prescription drugs,” the parishioners’ suit says — and here, too, Gudin had more details for The Post.

“Their main thing when they got together — they’d start shooting up the Dilaudid,” she said, referring to an opium tincture they would allegedly use at the East Harlem apartment that, according to the suit, Miqueli was footing the $1,075.50-a-month rent for.

“They would party. There would be needles and syringes all over the house,” Gudin said.

“There was equipment at the house — dildos, whips, chains and chaps. Keith used it. The priest also used it,” she said.

The sex toys, she said, were all bought by the priest.

“This chastity belt was very unique,” she told The Post. “It’s also small, so when ‘it’ grows, you’re in pain.”

“I’m sure the priest buys all the equipment,” she added.

At one point in her e-mails to Dolan, she relayed what she called, “The most vile, sickening part of the story.”

“Keith told me that Miqueli over the years has had a huge fantasy — for Keith to take him to Boro Park in Brooklyn, to the Hassidic section,” she wrote.

“And to humiliate him in public, in front of a pretty Jewish girl ... When Keith told him I’m [Gudin] Jewish, as you can imagine, Miqueli’s perverted efforts intensified.”

Miqueli would sometimes wait until Gudin came home, so she could see their sex play, she wrote.

“When I get home, they would be in bed together, naked, doing their disgusting activities. Our apartment is big, but none of the rooms have doors on them.”

“All because he has a sick fantasy of defiling a pretty Jewish girl.”

“He’s standing on his knees. He’s got his collar on,” Gudin said Crist relayed of their antics. “Crist would say, ‘You make me sick. You’re not worthy to drink my piss.’ ”

The archdiocese said on Friday that the allegations against Miqueli are under investigation.

Crist and Miqueli could not be reached for comment.

Additional reporting by Lorena Mongelli and Jennifer Gonzales