Now that more details on Blac Chyna's airport arrest have emerged and it's been confirmed that she wasn't only drunk on her flight, but also had ecstasy pills in her purse, her boyfriend Rob Kardashian's famous family fears she may be a bad influence. They're especially worried because Rob has a history with drugs, and they hope this new relationship isn't bringing him back to his old ways.

About two weeks ago, around the same time his sister Khloé Kardashian first found out about the strange new romance, someone in the family apparently received a call from someone who used to party with Rob, sources close to the family told TMZ. While this guy is now clean, he was just informing the family that Rob, 28, had been calling some other party friends as well and was trying to get some drugs.

Between this and Chyna's drug possession felony, the family fears he is in danger of relapsing, and they think the timing of this all has a lot to do with the fact that he's now hanging out with Chyna. They also are concerned because they don't believe he's taking his diabetes medications, which following his health scare in December, could mean his life is in danger.

However, though Rob drove all the way to Austin, Texas, to pick Chyna, 27, up following her arrest, he's apparently not very happy with her recent legal issues.

"Rob would never admit it, but it seems he is a bit disappointed in Chyna's arrest," a source told People. "It's never good when you are in a new relationship and your partner has legal trouble...It seems Rob has this idea that his life with Chyna will be so much better than his old life. He is clearly making an effort to change his negative ways. The question right now is just if Chyna is able to continue to be a good influence."

While the family isn't very happy with the two dating to begin with, considering the feud that's been going on between Chyna and the Kardashian sisters for some time now, and the fact that Rob's half-sister Kylie Jenner is currently dating Chyna's ex and baby daddy, Tyga, they really just don't think she's a good choice for him right now.

"It's troublesome that she was caught with drugs," People's source added. "There is a concern now that Chyna might not be great for him. Nobody wants their relationship to have a negative effect on Rob or end badly."