They have dated each other – well, not Kylie and Blac Chyna directly.
Tyga dated Blac Chyna who went on to date Rob Kardashian around the same time Tyga dated Kylie Jenner, Rob’s half sister.
Confusingly interesting, here is the timeline.
Blac Chyna officially began dating Tyga in January 2012, with the couple welcoming their son King Cairo Stevenson in October 2012.
In December 2012, they announced their engagement and separated around August 2014. Their split was the subject of rumours that Tyga was cheating on Chyna with Kylie Jenner – the sister of Kim, Kourtney, Khloe, Rob Kardashian and Kendall Jenner.
Kylie and Tyga did not confirm the rumours – everyone knew about – until she turned the legal age of eighteen in 2015.
A social media war began between Blac Chyna – who was a close friend of Kim – and Kylie, with the former trolling the latter. Chyna then entered a relationship with Rob Kardashian, Kylie’s elder brother in 2016, bringing an end to the social media war.
Rob and Blac Chyna had baby Dream Kardashian in November 2016 and split for good around February 2017, just two months before Tyga and Kylie split in April 2017