The video showed the basketball player, whose face was hidden by a white hooded sweatshirt, leaning in for a kiss as he spoke with the woman, who was later identified as Instagram model Lani Blair.
Tristan was seen getting cosy with a pretty brunette at PH-D Lounge, a rooftop bar in Manhattan, over the weekend. They were holding each other and it was so obvious.
Momager Kris Jenner has also been plugging the cosmetics brand, while Kendall Jenner has been skydiving with another errant ex of her sisters, Scott Disick - who has three kids with Kourtney. After having fun at the nightclub, the two were later spotted entering Tristan's hotel, the Four Seasons.
The sightings were reported both before and after the couple appear to have been kissing at the bar.
A source said: "Kris has gathered the family and made sure they would all be there for her".
In the world on Instagram, the dreaded unfollow makes your feelings known, but it turns out that they haven't actually unfollowed him and this is all nonsense.
However a woman called Stephanie has claimed that she is the one he slept with and that she is also pregnant.
While the footage is yet to be confirmed as legit, as neither the family or Tristan have released a statement, many media outlets are reporting that the Kardashians have pretty much labelled the "cheating" allegations as truth, after "unfollowing" the National Basketball Association star.
Yes - it would appear so.
The Cleveland Cavaliers star was pictured appearing to kiss Instagram model Lani Blair in NY on Saturday night; while footage from last October saw Tristan getting cosy with two women in a hookah lounge.
Would possibly Khloe Kardashian's little one daddy be "a serial cheater"?
When Craig, who has a one-year-old son, Prince Oliver, with Tristan, realised the tape could be released, she enlisted an attorney to secure the video and destroy it.
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