In an explosive social media meltdown, Rob Kardashian appeared to expose his ex-fiancée and the mother of his child, Blac Chyna, accusing the reality star of cheating on him with multiple men, abusing drugs and undergoing plastic surgery.

Kardashian started off the series of posts on Instagram with a video of Chyna kissing another man, which apparently sparked his vicious attack.

“Hahahaha Chyna just sent me this video saying happy 4th of July what a crazy person. Come spend time with your daughter instead of f**king me and then this dude right after. U need help,” Kardashian captioned along with the video.

— Kanye West and Kim Kardashian hire surrogate for third child — 

The post was followed by several others, including semi-nude photos of Chyna, including alleged photographs of her before and after undergoing plastic surgery following her giving birth to their 7-month-old daughter, Dream.

Kardashian, 30, claimed that he paid $100,000 for Chyna’s post-baby procedure, and accused her of having their daughter only to “spite her other baby daddy,” rapper Tyga. He also vowed to keep their daughter away from Chyna unless she stopped allegedly abusing alcohol, cocaine and ecstasy.

Chyna, real name Angela White, 29, responded to Kardashian’s accusations, claiming that he abused her and cheated on her with multiple women. “I’m supposed to be quiet because you’re a Kardashian,” she said.

See the explosive posts below.