X-rated stripper Belinda Medlyn is at the centre of a modern-day “courtship” which started on Instagram three years ago and culminated in five secret sex sessions — including on the eve of Warriors star Bodene Thompson’s match day.

She consented to group sex with the $260,000-a-year rugby league star, including a foursome with two other NRL players.

Ms Medlyn and Thompson — at the time a Warriors player — had a secret romp hours before his team took on the Bulldogs and lost at ANZ Stadium on September 6, 2015.

The Daily Telegraph can reveal Thompson’s 15-month-old boy Hendrix was conceived that night as a teammate looked on.

The secret relationship was conducted behind coaches’ backs and in team hotel rooms. In a series of online messages, the pair even sent pictures of friends and NRL players to each other for consideration for group sex.

The clandestine messages reveal the cloak-and-dagger lengths Thompson took to sneak the exotic dancer past coaches at the Pullman Hotel at the ANZ Stadium at Homebush that night telling her: “We’re not allowed girls in the hotel ... sneak in.”

Their son is now at the centre of a bitter dispute over finances to raise him. Ms Medlyn claims Thompson has been late in some payments of child support and wants more money. But he insists he doesn’t owe “a single cent”.

Ms Medlyn says she does not want to hurt the 29-year-old footy star, who is also the father to a seven-year-old boy from a previous relationship.

“There’s a pack mentality among NRL players,” the 35-year-old said. “They think they’re rock stars who can do what they want, until it goes wrong.

“We were never boyfriend and girlfriend, but Bodene is a role model to men and young boys.”

The story of the former stripper and the footballer started at the Santa Fe Gold strip club in Townsville, where Thompson’s Tigers teammates paid for dancers after a crushing 64-6 defeat by North Queensland Cowboys on August 9, 2014.

He was not there but a dancer introduced them on Instagram and they exchanged flirty messages over Facebook and WhatsApp.

First they had sex on a couch at his apartment in Rhodes in Sydney during the early hours of August 29.

Weeks later they had sex at her Coogee apartment. When the West Tigers’ season had ended a month later, Thompson, organised group sex with two other NRL players at her apartment.

They had a “ganga” with his male friends in a Gold Coast hotel room in December 2014. On the eve of their last encounter, he texted asking for a threesome but she replied: “Only you tonight.”

They had sex at the hotel as a teammate looked on — but did not use protection at his insistence.

Documents dated March 30, 2016 confirm Thompson as the father. He attended the birth of Hendrix at the Royal Hospital for Women in Randwick on May 16.

Ms Medlyn said she was desperate for her son to know his father better. She said Hendrix and Thompson had only seen each other seven times.

Thompson’s lawyer said: “He has always sought an active role in his son’s life and doesn’t owe a cent.

He is trying to work out an arrangement to see his son more; he lives in New Zealand and can’t just jump on a plane.”

Thompson, who is now in a relationship with Kiwi dance star Kaea Pearce, has refused to answer the Daily Telegraph’s calls.