#Trio turns toxic, as two friends sue ‘parasitic’ pal

A one-time Columbia University mathematics student is so “parasitic,” he’s being sued by not just one, but two former friends — who claim in court papers he’s spent years leeching off them financially.

Scott Solomon, 55, is now squatting in the Upper Manhattan apartment he once shared with his former platonic pal, Yukyung Choi, she charges in the Manhattan Supreme Court lawsuit. He accuses his frenemies of “gratuitous assholery.”

Solomon and Choi met in 2004, when he was her tutor. They became friends and moved in together in 2010.

Choi, a researcher for Moody’s Analytics Credit Risk group, paid for the rent, utilities, food, and funded the generally unemployed Solomon’s lavish lifestyle for a decade, she claims.

“What began as a symbiotic relationship between the two quickly turned parasitic,” she charges, describing Solomon in court papers as a “ne’er-do-well in every sense.”

She footed the bill for Solomon’s health insurance, designer clothes, business ventures, his “ill-considered and abortive hobbies,” and booze binges she estimates at one point “consumed one-third of her disposable income,” she alleges in court papers.

Over the years the money-sucking relationship drained Choi’s finances and landed her with more than $100,000 in credit card debt, she claims.

The duo embraced a third pal in 2015 — University of California at Berkeley finance lecturer Eric Reiner. The trio became so close, they went on five international vacations, funded by Choi and Reiner.

Things turned ugly three years later, when the 53-year-old Reiner, who is gay, suggested he and Choi should have a child together.

As Reiner and Choi made plans for her to conceive via help from doctors, Solomon became “increasingly controlling, demanding and belligerent,” allege Reiner and Choi.

In December 2018, an allegedly drunk Solomon threatened to kill Choi and Reiner during one of their trips, they charge.

Because of the unusual relationship and living arrangements of the trio, fertility experts required Choi and Reiner to create a co-parenting agreement, and include Solomon — even though he waived any parental rights, according to court papers.

As the agreement was discussed — with lawyers for all three of them paid for by Reiner and Choi — Solomon was “emboldened” to demand thousands in cash payments, and became “enraged, paranoid, irrational and uncontrollable,” prompting the friends to bring in a mediator, according to the suit.

At one point, the mediator felt Choi was unsafe living with Solomon, she claims in the litigation.

Choi quietly left the apartment they shared in October 2019 with nothing more than a few suitcases, even though the $2,460-a-month pad was in her name only. When Solomon realized she wasn’t coming back, he “protested, raged and threatened her,” according to court papers.

In one angry missive, Solomon demanded $350,000 to “disappear.” In another, Solomon said he would “particalize” Reiner for “stealing” Choi.

Despite a deluge of more than 1,100 vile messages, Choi and Reiner offered Solomon a deal: $9,500 cash and permission to stay in the apartment until Choi’s lease was up in April.

She offered to continue paying his cell phone bill and health insurance, while Reiner bought Solomon a new computer, tailored work shirts and an unlimited Metrocard to help him find a job. In exchange, all Solomon had to do was find work and stop harassing them — but he quickly failed to abide by the November agreement, they charge.

Now Solomon is threatening to “take advantage of the COVID-related delays in the Housing Court eviction process to squat, and is fully aware that in doing so he is exposing Yuky to financial, legal and credit-record damages,” Choi and Reiner allege.

Solomon, who admitted to The Post that he had issues with alcohol and depression, claims Choi owes her Wall Street career to his help, from hooking her up with friends in the field, to tutoring her at Columbia, to editing emails and client presentations because Choi “can’t write three sentences of readable English.”

He did the housework, cooked, and “coached” her through getting her American citizenship, he said.

“I put her interests above mine at every juncture, and she FLOURISHED under my watch,” he told The Post, adding that Choi’s debt stemmed from her vacations with Reiner.

Solomon slammed Reiner, claiming his wealthy one-time friend was simply using Choi to get a baby without having to pay a surrogate.

“Reiner wants to take advantage of emails I wrote when I had lapses with alcohol to drive me to suicide,” he claimed.

The pair, who are seeking more than $3 million in damages, accuse Solomon of intentional infliction of emotional distress and breach of contract, and want a court to order him to stop his bad behavior.