As rumors circulate that Khloe Kardashian is about to give birth any day now, the KUWTK star's boyfriend - Tristan Thompson - has got himself into hot water after allegedly cheating on her.

The accusations against the NBA star have come to light after a woman who claimed she'd spent the night with him posted a sex tape and a number of explicit messages on Instagram. The woman in question, who goes by the handle @ms.stephaniee, exposed Thompson on her Insta story when she uploaded a clip of the pair supposedly engaging in sexual intercourse.

Though these claims are not totally verified, as the video has since been taken down from the social media platform, there has been evidence of the sports star playing away from home before. Take a look at these surveillance clips posted by TMZ, for example:

Fans of the Kardashians have reacted with outrage to the news, with many of them urging Khloe to leave her cheating boyfriend.

"@khloekardashian, girl, you have the means & the support to do the right thing & leave his punk azz," wrote one commenter on Twitter. "You’ve put up with men dogging you for too long; it’s time to put yourself first & make sure he knows that NO ONE can do that to you! Stay strong."

"Ya’ll saying Khloe Kardashian got what she deserved because Tristan Thompson was a scumbag and cheated with her need to stop. No woman deserves to be cheated on when she’s days away from giving birth. This isn’t karma—this is a scumbag man who needs to stop," said another.

And others pointed out that Thompson has a track record of this kind of behavior: "Hey he left his pregnant girlfriend for Khloe. Looks like it's a habit with him."

Indeed, Thompson did leave his former girlfriend, Jordan Craig, in order to be with Khloe - and Craig was pregnant with his child at the time. Rather than weigh-in on the situation, however, Thompson's 26-year-old ex put out a plea on Instagram for others not to attack Khloe at this time.

"If you respect yourself and you respect others, you would never make light of the misfortune of anyone," she wrote. "Nor would you feel indemnified when it comes at the expense of others. Wishing peace for everyone."

Unfortunately, it's difficult to avoid the news when so many sources have accused Thompson of cheating.

An eyewitness who reportedly saw him out partying this weekend claimed that:

"I was there and he was on the table right next to us with a group of friends and some girl who he was obviously making out with all night. They were holding each other and it was so obvious. They were there when I got there and they were part of a big group of friends.

"They were talking and being around each other all night. He was texting and talking on the phone and she was obviously looking over his shoulder. Everybody knew who he was. We talked about it and everybody watched them make out several times. I have obviously seen him before and people around me were like, 'That's Tristan Thompson.'"

Khloe has yet to comment on the matter.

As rumors circulate that Khloe Kardashian is about to give birth any day now, the KUWTK star's boyfriend - Tristan Thompson - has got himself into hot water after allegedly cheating on her.

The accusations against the NBA star have come to light after a woman who claimed she'd spent the night with him posted a sex tape and a number of explicit messages on Instagram. The woman in question, who goes by the handle @ms.stephaniee, exposed Thompson on her Insta story when she uploaded a clip of the pair supposedly engaging in sexual intercourse.

Though these claims are not totally verified, as the video has since been taken down from the social media platform, there has been evidence of the sports star playing away from home before. Take a look at these surveillance clips posted by TMZ, for example:

Fans of the Kardashians have reacted with outrage to the news, with many of them urging Khloe to leave her cheating boyfriend.

"@khloekardashian, girl, you have the means & the support to do the right thing & leave his punk azz," wrote one commenter on Twitter. "You’ve put up with men dogging you for too long; it’s time to put yourself first & make sure he knows that NO ONE can do that to you! Stay strong."

"Ya’ll saying Khloe Kardashian got what she deserved because Tristan Thompson was a scumbag and cheated with her need to stop. No woman deserves to be cheated on when she’s days away from giving birth. This isn’t karma—this is a scumbag man who needs to stop," said another.

And others pointed out that Thompson has a track record of this kind of behavior: "Hey he left his pregnant girlfriend for Khloe. Looks like it's a habit with him."

Indeed, Thompson did leave his former girlfriend, Jordan Craig, in order to be with Khloe - and Craig was pregnant with his child at the time. Rather than weigh-in on the situation, however, Thompson's 26-year-old ex put out a plea on Instagram for others not to attack Khloe at this time.

"If you respect yourself and you respect others, you would never make light of the misfortune of anyone," she wrote. "Nor would you feel indemnified when it comes at the expense of others. Wishing peace for everyone."

Unfortunately, it's difficult to avoid the news when so many sources have accused Thompson of cheating.

An eyewitness who reportedly saw him out partying this weekend claimed that:

"I was there and he was on the table right next to us with a group of friends and some girl who he was obviously making out with all night. They were holding each other and it was so obvious. They were there when I got there and they were part of a big group of friends.

"They were talking and being around each other all night. He was texting and talking on the phone and she was obviously looking over his shoulder. Everybody knew who he was. We talked about it and everybody watched them make out several times. I have obviously seen him before and people around me were like, 'That's Tristan Thompson.'"

Khloe has yet to comment on the matter.