Rob Kardashian proposed to Blac Chyna after only a few months of dating

By Brittany King
July 25, 2016 04:00 PM

Rob Kardashian and Blac Chyna‘s relationship has hit a bump in the road, but that doesn’t mean it’s coming to a stop.

The 29-year-old Keeping Up with the Kardashians star overhauled his Instagram account Monday and deleted all traces of his fiancé, even unfollowing her account briefly before following her again.

But according to an insider, the pair haven’t split – they’ve just hit a rough patch while filming their reality show.

“They filmed over the weekend and had an argument,” the source tells PEOPLE. “Rob tends to blow up and react very fast. … They have rushed their relationship so much.”

“They are both very excited about the baby,” continues the source, so “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.”

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The pair became engaged on April 4, after only a few months of dating. In May, they announced that they were expecting their first baby together, and news broke one month later that the parents-to-be had landed their own reality show.

Keeping Up with the Kardashians airs Sundays (9 p.m. ET) on E! and Rob & Chyna premieres later this year.