Singer - known for his work on the X-Men film series as well as Valkyrie and The Usual Suspects - was sacked this week from his latest project, the Queen biopic Bohemian Rhapsody, with sources close to the production claiming the director had been feuding openly with the film's star, Rami Malek.
Bryan Singer allegedly raped and forced oral sex on a then-17-year-old in 2003. Sanchez-Guzman claims Singer claims raped him in 2003, when he was 17.
The lawsuit states that the yacht was owned by wealthy tech investor Lester Waters, and that the party was attended by a number of young gay men.
After the incident, Singer is reported to have both threatened and intimidated Sanchez-Guzman in order to ensure his silence.
Sanchez-Guzman claims in the suit that during the tour, Singer took him to a private room, where he then brought him to the floor, slapped him in the face with his genitals, and forced him to perform oral sex. Although the alleged victim pleaded with him to stop, Singer allegedly wouldn't and caused him to choke.
"As a result of the misconduct and unlawful acts described herein, Plaintiff has suffered, and continues to suffer, general and special damages", the Pacific Northwest filing on behalf of Cesar Sanchez-Guzman says.
You may recall another man, Michael Egan, making similar claims against Singer and other industry power players in 2014.
Through a representative, Singer denied the allegations.
Because of the alleged incident, Guzman says he suffered emotional distress, mental anguish, and physical and mental pain.
"The lawsuit was filed by the same lawyer who represented Michel Egan".
The lawsuit was filed the same week that Singer was sacked from the Queen biopic "Bohemian Rhapsody". He was also sentenced to two years in federal prison for an unrelated fraud case.
'Bryan Singer is no longer the director of Bohemian Rhapsody, ' Twentieth Century Fox said in a statement.