Cheating Allegations: 'Fat' Rob Kardashian Is Feeling 'Very Insecure' & Has Trust Issues With Blac Chyna

Rob Kardashian is reportedly "very insecure in his relationship" with Blac Chyna. The KUWTK star - who is expecting a baby with Chyna - is reportedly suffering from trust issues when it comes to their relationship.

A source told People magazine: "He is very insecure in his relationship with Chyna. They’ve had many instances and fights in which he accuses or suspects that she’s cheated. His issues with trusting girlfriends are deep-rooted."

The 29-year-old television personality is also insecure about his weight.

He confessed recently: "I do not want to go to Cannes anyways. Even when I was in the best shape of my entire life, I still had an insecurity with my weight. On top of that, there's paparazzi people that follow me and take pictures of me and that shuts me down to not wanting to go out when I'm obviously not feeling my best. I'm not comfortable in my skin, I'm not comfortable with this weight. So I feel like I'm not happy with anything I do right now."

However, Rob's mother Kris Jenner is confident that her son will be able to put his weight troubles behind him.

She shared: "Any time you get down on yourself, it's always a process to get back on top of it. And Rob has always been so athletic, he was the star track guy in high school and a basketball player, and he was the runner up after 20-whatever weeks on Dancing With the Stars, and dancing live in front of 40 million people or whatever it was ...

"He's been such an amazing athlete and in such great shape and very athletic his whole life, so this is not in his comfort zone. This isn't something he's experienced, so it's hard. It's hard for him to get the weight off like it is for any of us, so he's definitely been challenged by this. He'll work through it. I really have faith in him. He's just gotta put his mind to it."

Rob under criminal investigation for making threats at Pilot Jones
Rob Kardashian is reportedly under criminal investigation for making threats to Pilot Jones, the man who was seen kissing his fiancee Blac Chyna.

Chyna, 28, is about to give birth to her baby girl with Rob and was linked to Jones earlier this year during an alleged break from her beau.

It's unclear when the photo was taken, with the former stripper sporting straight black locks and bangs in the snap.

Though Chyna has since lashed out at Pilot Jones, insisting the photo taken two years ago and he's using it as a way to drum up publicity for his new song.

According to TMZ, Pilot Jones received a string of messages from the reality star, including one which said: "Leave my wife alone. I'm not playing with you."

TMZ also reports that the LAPD's Threat Management Unit is investigating.

Chyna is thought to have dated the actor/singer before hooking up with Rob.

According to Radar Online, Chyna is alleged to have then started seeing Pilot once again during one of her break-ups from her fiance.

Radar also claimed Chyna was seen partying with the actor and singer in Atlanta in March.