WARNING: This article may affect those who have experienced​ ​​​sexual violence or know someone affected by it.

One of more than 50 men accused of raping Frenchwoman Gisèle Pelicot in a mass rape case that has shocked the world told her in court on Thursday that he was sorry for what he did.

Lionel Rodriguez is among a small number of those accused who have admitted to raping Pelicot, who was abused by dozens of strangers over nearly a decade while knocked unconscious by drugs her husband, Dominique, gave her without her knowing.

Dominique Pelicot, who recruited the strangers online and invited them to the couple's family house to rape his wife, admitted to his crimes in court on Tuesday, saying: "I am a rapist, just like the others [the accused] in this room."

Rodriguez, aged 44, and a father of three, said on Thursday, speaking to the 72-year-old Gisèle Pelicot: "I am sorry, I can only imagine the nightmare you've lived through ... and I am part of this nightmare. I know my apologies won't change what happened, but I wanted to tell you that."

The case has triggered protests across France in support of Gisèle Pelicot, who asked for the trial not to be held behind closed doors in order to shed light on the abuse.

WATCH | Rallies in support for Gisèle Pelicot: 

French women rally for woman at centre of mass rape trial

Crowds took to the streets in France over the weekend to show support for Gisèle Pélicot, whose husband is accused of drugging her and allowing strangers to rape her over several years.

The fact that dozens of seemingly ordinary men, currently aged 26 to 74, and from all walks of life, could rape an unconscious woman has attracted worldwide attention and turned the trial into a symbol of the pervasiveness of sexual violence.

Rodriguez admitted during the investigation that he had raped Gisèle Pelicot. In court on Thursday, he repeated that he had not meant to rape her but realizes that he did.

"If I had known she wasn't aware [of what would happen] I wouldn't have gone there," he said. "I should have checked that she was OK with it. I didn't talk to her, so I could not get her consent. I feel guilty for what I did.

"I never told myself: I will rape that woman," he said. But "I'm guilty of rape," he said, adding he should have left when he saw she was unconscious, and that it was cowardly of him not to have said anything.

Rodriguez also tried to shift some of the blame onto Dominique Pelicot, telling the court he had done what the husband had told him to do.

For anyone who has been sexually assaulted, there is support available through crisis lines and local support services via the Ending Violence Association of Canada database. ​​

For anyone affected by family or intimate partner violence, there is support available through crisis lines and local support services. ​​

If you're in immediate danger or fear for your safety or that of others around you, please call 911.