Rob Kardashian accused his former fiancee Blac Chyna of cheating in a series of posts Wednesday on Instagram.

The 30-year-old reality star shared explicit photos of Blac Chyna on the social media site after claiming the 29-year-old model slept with multiple men while they were together.

"Never once have I cheated on Chyna and I remained loyal to her even after all the cheating she been doing and the multiple men she been [expletive]," Kardashian captioned a screenshot of a text conversation with one of Blac Chyna's alleged lovers.

"I never been so disrespected in my life," he added to a screenshot of an explicit exchange he had with Blac Chyna on Tuesday.

"I just bought her 250K of jewelry yesterday. This woman is so disrespectful and I don't care."

Kardashian and Blac Chyna, who share 7-month-old daughter Dream, split again in February following a highly-publicized breakup in December.

Blac Chyna said in a since-deleted post this week that she's "single" and "happy."