Here's a complete timeline of Thompson's current cheating scandal and the fallout.
Kylie Jenner and Jordyn Woods have been best friends for years
"Khloe feels so betrayed," an anonymous source told Us Weekly . "This time it hurts even more because the person who it was with is someone who knows very much what Khloe has gone through in the past year. Jordyn is like part of the family."
Thompson and Kardashian may have spent Valentine's Day together
Officially, however, Thompson and Kardashian have been a couple for the past three years. According to TMZ, Thompson flew to Los Angeles on Thursday to spend the romantic holiday with Kardashian and their daughter.
The two were not seen together that day, but Kardashian did share a photo of an elaborate bouquet of flowers she received, adding a caption that called Thompson "daddy."
Thompson and Woods were reportedly spotted 'all over each other' on Sunday night
According to The Cut's resident Kardashian expert Mariah Smith, both Thompson and Woods attended Drake's Los Angeles concert on Sunday.
As Smith notes , it makes sense that none of the Kardashian-Jenner family members would join them, considering Kanye West's public qualms with the rapper in question but a source told E! News that Thompson and Woods "were definitely hanging close to one another" at the concert "and were being very flirty."
Jason Lee, the CEO of gossip site Hollywood Unlocked, later corroborated TMZ's report . He saysa Hollywood Unlocked contributor was also at the party and witnessed Woods sitting in Thompson's lap, the two getting "touchy feely," and staying together overnight.
"That happened, that's a fact. And I don't wanna hear nobody trolling Khloe, talking about, 'It's a Kardashian curse. It's Khloe's fault.' No. If a n---- ain't s---, he ain't s---," Lee says in a video posted to the Hollywood Unlocked Instagram account. "And the fact that Kylie your best friend was at the house doing all that? Get her out now. And get him out, too."
The Hollywood Unlocked eyewitness claims that Woods didn't leave Thompson's home until 7 a.m. on Monday morning.
Sources say Kardashian heard about Thompson's alleged cheating on Monday and immediately ended their relationship
According to E! News, Kardashian heard of Thompson's reported affair with Woods through a mutual friend on Monday and "multiple people" corroborated.
When she confronted him, according to E!'s source, he "tried to deny" but she didn't believe him.
"She is angry more than she is sad. And she's shocked Jordyn would do this," one of E!'s sources said. "Of all the guys in the world, she can't fathom why Jordyn would make a decision like this."
Upon hearing the news, Kardashian reportedly broke up with Thompson. TMZ reports there's "little chance for reconciliation."
Kylie Jenner and Woods were relaxing at home Monday night
Jenner posted a video of herself relaxing in bed before turning the camera to catch Woods nearby in her pajamas.
The source added that Jenner "confronted Jordyn" when she heard the news, but "not in person."
When reports of the scandal broke on Tuesday, Khloe Kardashian and her family and friends appeared to confirm the news
Kardashian and her best friend Malika Haqq both expressed their support of Lee's account. Kardashian commented using a slew of yelling emojis, while Haqq wrote, "STRONG FACTS."
Larsa Pippen, another Kardashian confidante, also commented, writing, "Amen!!!" Pippen later told TMZ that she didn't think Woods would be living with Jenner much longer.
Haqq even doubled down by commenting on another video of Jenner's daughter Stormi saying "bye" repeatedly, with a caption that jokes about Jenner evicting Woods from their shared house.
"These hoes ain't loyal," Haqq commented.
Various family members began to take stands on Instagram
Khloe and Kylie both still follow Woods and Thompson on Instagram.
Haqq was the first to unfollow Woods on Tuesday night. The eldest sister, Kourtney Kardashian , has now also unfollowed Woods.
Wednesday night, Woods reportedly moved out of Jenner home
"It's been a difficult time and she's broken up about it," the source said. "She's heading home to be with her mom."
"It seems Kylie isn't sure what to do," one source added, "but it seems impossible for her to keep Jordyn around."
Khloe Kardashian's social media activity on Thursday morning appeared to address the 'betrayal'
"The worst pain is getting hurt by a person you explained your pain to," one post on Kardashian's Instagram story reads.
Another post referenced a "betrayal" that's really a "blessing," while another implied that Kardashian has been "broken" by reports of Thompson's continued infidelity.
"If they ask you about me, tell them: 'She was the only person that loved me with honesty, and I broke her,'" Kardashian's third post reads.
The "Revenge Body" creator liked a fan's tweet that called Thompson a "sick man" and Woods a "terrible woman," concluding that both are "terrible people that do not deserve [Khloe's] love."
Hollywood Unlocked reports that Thompson and Woods have been involved for 'over a month'
In an "exclusive" published on Thursday , Hollywood Unlocked reports that Woods "sought Thompson out and they have been involved for over a month." The website cited "a source close to the NBA player."
Woods has not commented publicly at the time of this post. Representatives for Khloe Kardashian and Tristan Thompson have not responded to multiple inquiries from INSIDER.