David Daniels, the world's most famous countertenor, and his husband, conductor Scott Walters, have been accused of drugging and raping a young singer in 2010.

The couple, well known in the classical music world, were married by Supreme Court Justice Ruth Bader Ginsburg in 2014. They have both denied the allegations.

Samuel Schultz alleges that Daniels and Walters attacked him after a performance in Texas in May 2010 when he was 23 years old, reports the New York Daily News. He says the couple invited him back to a corporate apartment where they were staying after a closing night party for Daniels's run in Xerxes at the Houston Grand Opera. Walters told him to keep the invitation secret to avoid causing jealousy. Schultz claims he woke up the next afternoon “in a bed alone, completely naked. I was sore and I didn’t know why. I made my way to the bathroom to figure out why I hurt. I was bleeding from my rectum."

He told police in a recently filed complaint, "I tiptoed out of the bedroom to discover that David and Scott were not there. When they came back from eating somewhere, I think they asked if I had a good time. … I remember David saying, ‘Don’t worry about the BB thing, I’m totally negative.’ BB, in this case, meant bareback, otherwise known as raping me without a condom.”

Schultz, who was a graduate student at Rice University at the time, claims that he was afraid to come forward then due to fear it would hurt his career as a baritone singer.

As a marathon runner, he doesn't usually drink alcohol, but he accepted a drink from the couple to be polite. He says he blacked out after a couple of sips.

In the wake of the #MeToo movement, he learned that Daniels, a favorite of audiences at New York City's Metropolitan Opera, had been granted tenure at the University of Michigan. There he would be in close contact with singers, in a power dynamic similar to the one Schultz experienced at the time of the alleged attack.

In July, Schultz filed a complaint with the university's police department's special victims unit, which passed the complaint on to the Houston Police Department. Houston police say the investigation is ongoing but no arrests have been made.

Schultz says he called a health center to make an appointment following the incident, but since, out of fear, he did not disclose why he needed medical attention, he was told to wait three weeks. By the time he got in for a visit June 1, all evidence of the rape was gone.

He discussed the events with his friend Megan Gale, who was then an employee in Rice University's music department. She corroborated his claims to the Daily News.

A therapist Schultz had seen after the event also told the paper (with the client's permission) that he shared specific details with her regarding the interaction with Daniels and Walters.

“His emotional state, his psychological state of mind and functionality were markedly affected,” she remembered. “He has proceeded over to time to work very hard to address this abuse in an attempt to recover from the impact and has managed to turn this into a cause so that he’s not dragged into hell [by it].”

"There was a legitimate danger of always destroying my career by reporting someone else’s assault against me,” Schultz wrote in an essay he published online in July. In it, he did not name the accused but referred to a celebrated opera singer and his boyfriend. “Yes, men are raped. I did not know that the word 'rape' applied to what happened to me until I lethargically went to tell a friend, and told her through tears and emptiness, what happened to me. In fact, I was so naïve that I didn’t know that I should have gone to the hospital or even what a 'rape kit' is. We must do better in educating each person about the realities and tragedy of rape."

Daniels and Walters both denied attacking Schultz. "I appreciate you reaching out to me,” Daniels told the Daily News. “Other than I deny these allegations, I have nothing to say. They're completely false."