Kardashian, 33, is now at their home in OH, awaiting the birth of her baby girl, but that didn't seem to phase the Cleveland Cavaliers player.
The clubber who filmed the clips told the Mail: "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".
The black-and-white footage, acquired by TMZ, shows the Cleveland Cavaliers power forward canoodling with the women on a couch, making out with one of them while the other pulled his head into her chest. Tristan Thompson was caught on camera making out with multiple women amid his alleged flirting session in NYC!
Khloé revealed that she isn't afraid of giving birth on her website, and the mama-to-be penned: "I've seen over eight births live and in person". Then at 5am, they returned to his hotel together AGAIN and he even held the door open for her like a gentleman.
Tristan Thompson was brazenly cheating on Khloe Kardashian with not one but two women back in October, when Khloe was 3 months pregnant. I know how he looks like and people were trying to take selfies with him but he didn't let them. "Her pregnancy is supposed to be the most special time in her life, and instead it has been ruined by Tristan and is becoming the most painful", our insider continued.
Neither Khloe nor Tristan have commented on this report.
Amid the reactions to the upsetting news on social media, there has been an overwhelmingly negative response that Khloé somehow "deserved" to have this happen to her. "I have the best job in the world...."
Khloe has been staying in Cleveland where she plans to give birth to her and Thompson's daughter. Her plan is to keep everything secret for a few days - just like Kylie [Jenner, her half-sister] did.
Although Khloe is feeling supported by her large family, she wants to "figure out" how to be a parent on her own, and won't be copying her sisters when it comes to raising her little girl.