Tristan Thompson caught allegedly cheating on Khloe Kardashian AGAIN

While it's only been four months since Tristan Thompson was caught kissing a mystery woman just days before Khloe Kardashian gave birth - another cheating scandal is rocking the reality family's household.

Over the weekend, new reports have emerged claiming the 34-year-old 'Keeping Up With The Kardashians' star's boyfriend has cheated on her again.

The 27-year-old NBA star was reportedly spotted getting close to another mystery woman while teaching at a basketball camp in Toronto.

According to Radar Online, the unidentified woman was part of his touring party.

"There was a woman in Tristan’s entourage and it wasn’t Khloe," the source said.

"They looked like more than friends because he had his hand on her lower back when they arrived. There was definitely something there."

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"She was a beautiful, young girl who looked as if she could be a model. She, along with one of his security detail, stayed in the locker room while he taught camp."

"He appeared to be in a hurry to get back to his female companion because he jetted out of the centre the minute it was over."

Back in April, TMZ shared multiple videos of Tristan getting cosy with a brunette woman.

The celebrity news website published footage of Tristan and the mystery woman kissing at a rooftop club in New York and later arriving at his team's hotel early the next morning.

They also revealed surveillance video from October 2017 that showed Tristan Thompson kissing two women at a hookah lounge outside Washington DC.

The couple - who welcome their first child together, a daughter called True, in April - have yet to acknowledge the new reports.