That could have been an awkward run in!

Arriving from Atlanta, Blac Chyna and her boyfriend Rob Kardashian just missed an awkward run in with her ex hubby Tyga, who was flying out of LAX on Tuesday morning.

We have to say -- Tyga could not have looked happier as he jetted out of the airport! It appears as though all is good in regards to his ex's new man. When our camera guys asked the rapper how he felt about his son King Cairo hanging out with Rob, Tyga said, "Rob is a great person." Glad that he's easy and breezy about their new relationship!

Ya know who did not look happy? Chyna and Rob -- they looked all sorts of miserable as they headed out of the City of Angels. Despite a plethora of break up rumors, the two appear to still be a couple -- but they couldn't look any less excited after being on a trip together. They look miserable!

We are a little confused that Rob seems to be wearing the exact same outfit he wore the day before -- umm maybe he's a cartoon and only has one outfit? Did he lose so much weight he doesn't have any other clothes that fit him? Maybe he rushed to get to his needy lady and didn't pack anything? The reclusive reality star was only in ATL one night!

Over the weekend, Rob posted a close-up snap of the duo on his Instagram, but not before he erased all other photos of the attention-seeking twosome from the his social media account. "Chy and I are not broken up we just feel like it would be a lot healthier for our relationship if we kept a lot more to ourselves," Kardashian wrote. He added, "It's impossible to have a positive relationship with so much negativity from the media and outsiders and we would appreciate it if everyone respects that -ChyRo."

We give them another month ... tops ...