Los Angeles, California - The drama continues for Khloé Kardashian! Boyfriend Tristan Thompson is calling Sydney Chase's bluff on having supposed text messages from the athlete, and has served cease-and-desist papers to end her allegations of an affair.

On Thursday, Page Six reported that Thompson's attorney, Marty Singer, is putting pressure on Instagram model Sydney Chase to prove that she had an affair with the Celtics player.

In a statement to Chase, Singer claimed, "You have stated to the media that 'I will not be called a liar.' You claim that your statements about supposedly receiving texts from my client are true. You also were reading and quoting from those fictitious texts. You claim that those texts you allegedly received prove you had an affair with my client."

Singer added that Chase's refusal to provide the alleged text messages can only lead to one "inescapable conclusion...that they do not exist."

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Previously, Chase said that she hadn't received any documents from Thompson, before doubling back on that claim.

Last month, Chase alleged that she had been romantically involved with Thompson since January and that he claimed he was single. The model further revealed that the basketball star was in touch with her as recently as this past month.

Thompson rekindled his relationship with Khloé Kardashian in August 2020 after the pair quarantined together.

If Chase's accusations are true, this would be not be the first time Thompson has cheated on the reality star, with whom he shares a daughter, True.

Meanwhile, Chase seems to be unbothered by Thompson's new legal actions. The model will appear at the Las Vegas Hustler Club this weekend as a host.