Just when you thought the prominent non-Kardashians in the Kardashian's orbit were being all nice to each other, here comes a report that Tyga is actually not sincere about being happy that his ex, Blac Chyna, is now engaged to Rob Kardashian (and about to change her name to the much more boring Angela Kardashian).

Earlier this week, Tyga took to Twitter to express his happiness over the mother of his child finding love again, and said that how she found it was none of his concern.

But TMZ is reporting that according to those close to Blac Chyna, she doesn't believe a word of it, and actually believes that Tyga and his crew have been on an active campaign of "trying to destroy her life."

The report says that Tyga has filed documents in court to take full custody of their son, King, and refuses to even communicate with Chyna through any method except for email. On top of all that, the website's Chyna sources said that Tyga and his friends have been out there calling her a "drunk whore," "deadbeat mama," and "nasty bitch."

Aside from having a child together, Tyga is dating his ex's fiance's sister, Kylie Jenner, so their worlds can't be that far apart. Tyga and Chyna were engaged from 2012 until 2014. King was born in 2012.

On the Rob side of the equation, his ex-girlfriend, Adrienne Bailon, told E! she's happy for Rob on Thursday, saying, "I think everybody deserves happiness and I think it's just absolutely awesome. He looks like he's so happy." Hopefully we won't find out she's actually trying to destroy anyone's life.