Despite taking to Twitter and wishing his ex well on her new engagement, Tyga is reportedly making Blac Chyna’s life “a living hell” behind closed doors. TMZ reports that a Chyna source says Tyga is still gunning for full custody and “will not back down,” and is making communication difficult by only speaking through email or their nanny. The source adds that Tyga changed his cell and won’t give Chy the new number, and that he and his crew have been on a campaign to destroy her reputation, calling her a “drunk whore,” “deadbeat mama” and “nasty bitch.”