Rob Kardashian and Blac Chyna have some issues to work out.
Although Rob apologized on Monday for all the social media drama over the weekend -- when he said his fiancee, Chyna, left him and took their daughter, Dream -- and Chyna appears to have since forgiven him, a new report gives some disturbing details on their alleged dramatic blowout.
According to E! News, the on-again, off-again couple had a fight that turned physical prior to Chyna moving out. Chyna allegedly punched Rob in "his back and arms and was in a drunken rage," a source tells the publication, adding that Corey Gamble -- Rob's mother Kris Jenner's longtime boyfriend -- then walked in on the altercation and "ripped Chyna off of Rob."
A representative for Chyna said they have no comment.
WATCH: EXCLUSIVE -- Blac Chyna's Mom Reacts to Rob Kardashian's Social Media Meltdown: 'He Has an Issue'
On Monday, Rob Instagrammed that he was "seeking help," and that he wants to "get better" for his daughter.
"This weekend I was in an emotional bad place and did some things that embarrassed myself and my family," the 29-year-old reality star wrote. "I apologize and I'm seeking help to deal with my flaws/issues. Please pray for me and I'm sorry @blacchyna. You are a great mother to our child and I love you."
Shortly after, 28-year-old Chyna reposted his Instagram apology to her own page and added a heart emoji and his name as the caption. Previously, she had Instagrammed that she was "done" with their relationship, and claimed that she was "verbally abused" throughout her pregnancy.
"I was doing swell before I got with him!" Chyna wrote. "Rob asked for all of this! Rob begged me to have Dream! He stressed me out my ENTIRE PREGNANCY!!! Accusing me of cheating, going crazy on me with massive text blast daily! Being an absolute lunatic and then cover it up with gifts! I was verbally abused every other day. I was still there with nothing but high hopes for us!"
For his part, Rob accused Chyna of using him. "I truly loved Angela," he fired back. "I gave everything I owned for her. Didn't know I was just part of her plan. I really believed she was in love with me the way that I was with her and I am so hurt and never felt this before. ... Chyna knew exactly what she was doing to get me. I can't believe she did this to me."
WATCH: Heartbroken Rob Kardashian Responds to Mean Memes After Blac Chyna Leaves Him
ET spoke exclusively to Chyna's mom, Tokyo Toni, on Monday, and she said the two "are gonna be fine" despite their latest argument.
"Rob’s got his thing with him ... he plays too much," Toni said. "He's insecure as hell and he's gotta get over it. There’s no help for him until he gets help. That's about all I can say."