Kylie Jenner's best friend Jordyn Woods allegedly cosied up to Tristan Thompson on Sunday during a house party in Los Angeles.
Hours after the news went public, Jordyn, 21, is said to have moved back into her mother's house, according to People, having been living with Kylie, 21, at her home.
A source told the site: 'It's been a difficult time and she's broken up about it. She's heading home to be with her mom.'
The magazine revealed that the report of Jordyn and Tristan together at the weekend party 'blindsided' the Kardashian/Jenner family.
At first, the insider said, the family did not believe the story - that Jordyn and Tristan - 'made out' and were 'all over each other' at the party.
On Tuesday, TMZ and Hollywood Unlocked reported the news that not only was Tristan unfaithful to Khloe - who he shares daughter True with - he cheated on her with Kylie's best friend, Jordyn.
Tristan was also seen sneaking two women into a bedroom at a late night 'singles' party on Valentine's Day, DailyMailTV can reveal.
TMZ revealed that after learning about the betrayal, Khloe, 34, broke up with Tristan for good.
The outlet said that 'she had enough' after finding out the news and that there's is 'little chance' of any type of reconciliation between Khloe and Tristan.
Kylie and Jordyn have been best friends since middle school.
Khloe also hired Jordyn to be part of the Good American squad for her denim/workout line.
While they believed the part aboutTristan Thompson being 'inappropriate' because 'everyone knows that he can't believe,' the fact that Jordyn 'would make out with him' seemed 'at first like a made up rumour.'
