• Khloe Kardashian and boyfriendTristan Thompson are expecting their first child together.
• On Tuesday, photos surfaced of Thompson with an unidentified woman at his hotel in New York City — while Kardashian was preparing to give birth in Cleveland.
• Soon after, TMZ posted a video from October, which allegedly shows Thompson cheating on Kardashian with two women in a club.
• This is not the first time Thompson has been accused of cheating on a pregnant girlfriend.
• Here's the complete timeline of his rumored infidelity.

While Khloe Kardashian was stationed in Cleveland, Ohio, on Tuesday, awaiting the birth of her first child with boyfriend Tristan Thompson, rumors began swirling that Thompson was photographed "getting up close and personal with a mystery brunette" in New York City.

From there, videos and photos cascaded from sites like The Shade Room and TMZ that claim to show the NBA player cheating with multiple women — but the unearthed receipts haven't all been chronological.

If you've been following the expectant couple's relationship on social media, you'll know that Thompson's reputation hasn't been entirely clean. Here's the full timeline of his rumored infidelity.

Thompson and Kardashian began dating while his ex-girlfriend of two years, model and blogger Jordan Craig, was pregnant.

Thompson and Craig were together for about two years, from 2014 to 2016, but it's unclear exactly why they broke up. Neither have addressed their relationship since, and Craig never commented on his relationship with Kardashian, which sparked in the summer of 2016 after a successful blind date.

Thompson and Kardashian stepped out as a couple in September 2016 and even went on vacation together. Craig was six months pregnant at the time.

"When Khloe first started dating Tristan, her family questioned if it was a good idea. There were several concerns, including that he is another basketball player and also that his ex was pregnant," an unnamed source recently told People. "It took a while for the family to accept Tristan. They were worried that Khloe would end up heartbroken."

Shortly after Thompson and Kardashian went public with their relationship, sources claimed that he was a cheater with an existing "side chick."

BET reported that, in addition to his history with Craig, Thompson was still seeing another woman. 

The site cited a source who claimed that Thompson and Craig broke up because of his "cheating ways."

Bossip, however, claimed that Thompson and Craig were "very much still an item" when he was initally filmed making out with Kardashian on Snapchat — and that "nobody close to them believes he'll leave for Khloe."

Sources also told OK! magazine that Kardashian's friends were concerned about her "dating patterns" and her new beau's intentions.

Craig gave birth to a son, Prince, in December of 2016. She apparently did not list Thompson as the father on Prince's birth certificate. According to TMZ, the baby's father must be present at the hospital for his name to appear on the initial birth certificate, though his name can be added after. Prince's last name, however, was still listed as Thompson.

Kardashian has never publicly acknowledged the birth of her boyfriend's first child. And while the new father did not acknowledge the birth on social media — and it doesn't appear that he has ever posted a photo of his son since — he did post a photo of himself and Kardashian together on Christmas, two weeks later.

"Merry Christmas & Happy Holidays from me and mines, to you and yours," he wrote.

About two weeks after the news broke that Kardashian and Thompson were expecting their first child together, he was filmed fooling around with two other women.

On Tuesday, TMZ published a surveillance video that was reportedly taken back in October — when Kardashian was three months pregnant — of Thompson appearing to cheat on her with two women at a hookah lounge outside Washington, DC.

The video was recorded on October 7, 2017, the night before Thompson and the Cleveland Cavaliers played the Washington Wizards.

While it's unclear why the footage has only just surfaced, the couple was almost certainly aware of Kardashian's pregnancy when the cheating reportedly took place. Although the couple had yet to confirm the pregnancy publicly, as The Cut writer and "Keeping Up With the Kardashians" expert Mariah Smith noted, they likely filmed her announcement to the family on August 25, 2017. 

Once Kardashian confirmed her pregnancy in December 2017, Twitter was aflame with the allegation that Thompson had cheated on his pregnant ex with Kardashian.

Although the rumor had obviously been floating around social media for months, it didn't seem to gain much traction until Kardashian's pregnancy was confirmed. 

"OK but he cheated on his pregnant ex with u so what makes u think he won't do the same now," one commenter wrote on her announcement post.

Twitter user @rosechocglam also expressed disdain that Thompson has rarely — if ever — acknowledged his son Prince on social media, "but was happy to pose for a pregnancy announcement with Khloe."

At the time, an unnamed source told Hollywood Life that Craig didn't want to be seen as a "poor victimized woman."

"Jordan and Tristan had split already when he met Khloe, so he didn't desert her at all, and they're actually pretty good friends still, all things considered," the source told the site.

On Tuesday, April 10, nearing Kardashian's due date, photos and videos surfaced of Thompson with another woman in New York City.

The Daily Mail reported that Thompson was seen kissing an unidentified woman at PH-D Lounge in New York City on Saturday, April 7.

The alleged encounter was caught on video, which the Daily Mail published. The unnamed woman who filmed it told the site, "I was there and he was on the table right next to us with a group of friends and one girl who he was obviously making out with all night." 

Page Six later identified the woman as 28-year-old model Lani Blair and alleged that the two spent four hours together at the Cleveland Cavaliers' hotel (who were in the city to play the New York Knicks on Monday night). The pair was then photographed on their way to Soho House and again back at the hotel at 5 a.m. on Sunday.

Meanwhile, the "Revenge Body" creator has been nesting in Cleveland as she awaits the arrival of their daughter. She has not yet commented on the rumors.

"Tristan has been consistently cheating on Khloe. He's a serial cheater. And there will be more women to come out of the woodwork," a source recently told People. "[Family and friends] are heartbroken for Khloe. They didn't realize how deceptive Tristan could really be."

Thompson's ex reacted to the news on social media shortly after reports of his infidelity broke.

While fans flooded Craig's social media with comments like "you won" and "Karma's a b----," she seemingly took the high road with a message on her Instagram story.

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

Other people close to Thompson were apparently less than shocked about the news.

"None of his friends are surprised by this and they all know he cheats," one source told Us Weekly. "Most of his friends and people in his circle also cheat and don't think there's anything wrong with it."

Some people think that the recent leak had been planned.

Twitter users were quick to note that Kardashian began dating Thompson while Craig was still pregnant, suggesting that she must have known if he had been cheating on his ex. Many others also thought it suspicious that TMZ's footage was recorded in October and has only just been released, now that Kardashian is nine months pregnant.

According to Smith, TMZ likely sat on the footage from October until they received a go-ahead to publish from the family.

Smith also noted that Kardashian left Cleveland to return to her family on the same day that Thompson allegedly cheated in the hookah bar, which may imply that she found out about his cheating in real time.

None of the family members have commented on the rumors. Kim and Kourtney have been conducting business as usual, updating their social media accounts with photos from their tropical vacation. Their pregnant sister is due any day now, so it seems unlikely that she will address the accusations while she's focusing on giving birth. 

INSIDER will keep this post updated with any new developments. Representatives for Khloe Kardashian did not immediately respond to INSIDER's request for comment.

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