Tyga is happy for Blac Chyna and Rob Kardashian.
The rapper's former fiance recently got engaged to her boyfriend of three months and while Tyga and Blac have had an acrimonious relationship since their split, he insisted he only wants her and their son King Cairo, three, to be happy.
Tyga, 26, tweeted: "Everybody deserves 2 be happy. What some1 does for their happiness is not my concern, as long as it's not interfering wit my happiness.
"It makes me happy to see the mother of my son happy.My only concern in this situation is my son. I want him in happy environments (sic)."
Blac, 27, was previously close friends with Rob's sister Kim Kardashian West but fell out with the family after Tyga started dating their younger sister Kylie Jenner, 18.
Meanwhile, Blac - who celebrated her engagement with Rob, 29, at a strip club - is excited to become a Kardashian.
Her representative told PEOPLE that the model, real name Angela White, is planning to use her given name once she ties the knot, saying: "She was more than excited, she was thrilled, just super happy. She's soon to be Angela Kardashian. She's ecstatic."