Canadian mother-of-three Karine Gagne, 23, allegedly had sex in the bathroom with a 15-year-old American teen on a Bahamas cruise

A 23-year-old Canadian mother-of-three is behind bars after she allegedly had sex in the bathroom with a 15-year-old on a cruise in the Bahamas.

Karine Gagne was on the Norwegian Cruise Line ship with her co-workers at a company that sells adult-themed products when she met the teen at a bar and casino area on the boat.

Shortly after meeting the teen, who was reportedly a 6ft 1in American with a beard, Gagne allegedly had sex with him in the bathroom.

The teen's mother was present at the bar when she saw her son exit the bathroom with Gagne and immediately called police, according to CTV Montreal.

Bahamian law states that a 15-year-old cannot legally consent to sexual intercourse.

Gagne was arrested on January 5 and has been charged with sexual assault against a minor.

She has been in jail in the Bahamas for the last two weeks, according to The Tribune.

Chantale Auclair, Gagne's mother, said the teen had lied to her daughter about his age.

Gagne was on a cruise with her co-workers at a company that sells adult-themed products when she met the teen at a bar and casino area on the boat

Gagne's three children are aged three, four and five. This family portrait was taken in 2013. It does not appear as though Gagne is married

'She asked him how old he was and he told her was he was 18,' Auclair told The Canadian Press.

Auclair said Gagne told her the two had met at the bar while the ship was docked in in Great Stirrup Cay. They began to chat and danced together.

'At one point, it went further,' Auclair said. 'They went to the bathroom and they did what they wanted to do.'

Gagne had been on the cruise with her co-workers and manager to celebrate reaching sales objectives at their company, according to the Brantford Expositor.

The American teen reportedly pleaded for his mother not to report Gagne to authorities.

Auclair flew to the Bahamas to see her daughter and said they were only able to speak together for about an hour.

'I cried, I cried so much,' she said.

Gagne was arrested on January 5 and has been charged with sexual assault against a minor

She has been in prison in the Bahamas for the last two weeks awaiting a February court date

'But I told her I didn't come for nothing, that we weren't close for nothing. She is more than my daughter, she is my confidante.'

Auclair said Gagne is especially worried about her daughters, who are aged three, four, and five. They are currently back in Quebec.

'She said, "Mom, I don't want them to think I abandoned them,'" Auclair said.

Auclair is now raising funds to pay for legal costs, possible bail and a plane ticket home for her daughter, who she said works two jobs.

The concerned mother said it remains unknown how the teenage boy was able to enter an area reserved for those aged 18 and up on the Norwegian Cruise Line ship.

'I'm not blaming anyone,' Auclair added. 'I just want her to get out of there.'

A spokesman for the cruise line told Daily Mail Online that they do not comment on pending investigations.

Gagne could face up to seven years in prison if convicted.