Watch: Blac Chyna Accuses Rob Of Cheating During First Explosive Fight On New Show

Rob & Chyna is certainly going to be a roller coaster ride, and RadarOnline.com has the first sneak peak of what's to come on the highly anticipated show.

In E!'s new trailer for the six-episode docu-series, engaged couple and expectant parents, Rob Kardashian and Blac Chyna, put their rocky love life on full display.

"I fell in love with you because I know how good you are and how loyal you are," Rob tells his baby mama in the exclusive first look.

But in the next clip, Chyna screams at Rob over the phone, "Are you still texting bitches, yes or no?" before slamming the door.

Of course, signs of trouble in paradise are no surprise to RadarOnline.com. As previously reported, sources say the troubled Rob, who battled with both depression and Diabetes, has been refusing to film the show for weeks now.

"You can't make Rob do anything," one insider told RadarOnline.com. "He isn't worried about contracts, and it's become a waste of time for everyone."

Rob certainly seems to be spiraling. As RadarOnline.com readers know, the reclusive star deleted all photos of Chyna from his social media and failed to show up to sister Kylie Jenner's birthday party last week.

Watch the Video on RadarOnline.com:

Later in the preview, however, the couple appears to be back to their happy ways, kissing and laughing together. At one point, Chyna sweetly asks Rob, "Are you ready to be a daddy?"