Kylie Jenner’s reaction to best friend Jordyn Woods’s alleged cheating with Tristan Thompson has been revealed for the first time.

Professional basketball player Thompson was in a relationship with Kylie’s sister, Khloe Kardashian, and the couple share a one-year-old daughter, True.

In February, Thompson, 28, and Woods, 21, are alleged to have become intimate, although Woods denies they slept together and insists he kissed her.

A newly released mid-season trailer for Keeping Up With The Kardashians shows the moment Khloe was told of the incident, as well as Kylie’s reaction.

Khloe holds her phone while a voice is heard through a speakerphone saying: “I don’t even know if I should tell you this. Her legs were like in between his legs.”

A distressed Khloe says: “I am broken by so many things.”

Kris Jenner, the family matriarch, tells Kylie ending her friendship with Woods will be “like a divorce”.

Make-up entrepreneur Kylie, 21, replies: “She f***** up.” 

Later, Kylie is seen consoling Khloe, telling her, “just know I love you”.

Keeping Up With The Kardashians airs on E!