"They're definitely not broken up," the source tells PEOPLE
Kardashian, 29, hinted at the engaged duo’s first big argument on Monday when it was discovered that he had briefly unfollowed Chyna, 28, and deleted all traces of her on Instagram.
“They’re not broken up,” a Blac Chyna source tells PEOPLE.
RELATED VIDEO: Rob Kardashian and Blac Chyna Are Fighting but Unlikely to Break Up: Source
“They filmed over the weekend and had an argument,” a separate source shared with PEOPLE, adding, “It’s hard to see Rob and Chyna actually splitting. Rob is looking forward to becoming a dad. It would take a lot for him to break up with her.”
Reporting by MELODY CHIU and JANINE RUBENSTEIN