Lamar Odom's alleged mistress, Jennifer Richardson, revealed details of an alleged extramarital affair with the NBA player in a shocking new report.

Richardson spoke to Star magazine about her yearlong partnership with the NBA player after he was caught on film trashing paparazzi's camera equipment for questioning him about his alleged cheating.

Richardson, 29, told Star in the bombshell report that she first met Odom at the Stadium Club in Washington D.C. in January 2012. She said they first hooked up in the nation's capital, and the NBA player later arranged for her to fly to meet him in North Carolina and other cities during his away games.

She said they slept together at hotels in various states, and she attended his basketball games when he played for the Los Angeles Clippers.

See the recent photo of Jennifer Richardson here.

Richardson revealed she had a threesome with the Khloe & Lamar star on Christmas Eve after he requested the kinky romp.

"He had sex with me on Christmas Eve, before he flew back to L.A. to spend Christmas with Khloe," Richardson told Star. "It was tough when he had to leave. He was really sad. He would say, 'I have to go be a Kardashian now.'"

Another source confirmed the report to the newspaper.

"Lamar had told Jennifer that he really wanted to have a threesome," the source told Star about the alleged romp that occurred on December 24, 2012.

According to the insider, Richardson invited an attractive friend to join them in bed to make Odom happy.

"Lamar stayed an extra night in Phoenix, and the three of them hooked up on the morning of Christmas Eve!" the source said.

Richardson said she told Lamar in February that she was considering ending the affair because they were "growing [too] close." The alleged mistress said it was then the professional basketball star told her he wanted to have a child with her.

"A couple hours later, when we were lying in bed, Lamar rolled over and said, 'If you think it's hard now, wait until you get pregnant,'" Richardson revealed to Star. "I didn't think too much about his comment then, but the next morning it really affected me."

Frustrated, Richardson decided to end their secret affair the next month in March. She said she came forward to spill details about the affair because of Odom's recent explosive bout with paparazzi. She said the incident occurred in Los Angeles one block away from her home.

TMZ reported on July 11 that Odom trashed a photographer's camera equipment after he questioned him about having extramarital affairs. TMZ obtained a video of the incident where Odom is seen going into the back of the unidentified cameraman's car, grabbing his equipment and trashing it in the middle of the street. The photographer filed a police report for vandalism and considering suing the NBA star, according to TMZ.

Richardson offered words of advice for the Keeping Up With The Kardashians' star in the interview. She suggested that Kardashian file for divorce from Odom because he is seeing other women.

"My advice for Khloe would be to get a divorce," Richardson told Star. "If she thinks he's going to change, she's mistaken...I can tell Khloe that I'm not the only woman; there have been many. I just happened to be around the longest," she added.

Odom wed Kardashian in a lavish affair in September 2009 after one month of dating. Their wedding was televised for an E! special. They later had their own reality show Khloe & Lamar on E! for several seasons. Odom has two children with his ex-wife and childhood sweetheart Liz Morales. Morales shared the woes of her marriage to Odom in TLC's now cancelled series Starter Wives.

Watch the video of Lamar Odom trash a photographer's car near Jennifer Richardson's home below.

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