Khloe Kardashian Worries About Lamar Odom While Family Vacations in Cuba on 'KUWTK'

The reality star opened up about her ex: 'There's still so much Lamar has to fix about himself.'

Lamar Odom's struggle with addiction was front and center on Sunday's all-new episode of Keeping Up With the Kardashians, as Khloe Kardashian worried about her ex while the family was on vacation on Cuba.

"It's scary to go to another country and then not have any access to back home," Khloe shared. "Lamar knows that it's not easy to reach me. There's like one hotel in all of Cuba that has wi-fi… that's just a nerve-wracking thought."

WATCH: Lamar Odom Is 'Not In a Good Place Right Now,' Sources Say He 'Really Needs Help'

The 32-year-old reality star has been the former NBA player's rock throughout his on-going health issues, supporting him through his hospitalization last year, and during his ongoing recovery process.

"I mean I have put a lot of my life on hold to try to help Lamar and get him on a great track," Khloe explained, adding that her ex "has come a long way since his hospital situation," but that there is "still so much Lamar has to fix about himself."

WATCH: 'KUWTK' Will 'Address' Khloe Kardashian and Lamar Odom's Second Divorce

For Khloe, the fear was that the former NBA star would revert back to his old ways. According to the reality star, when the two were married, Lamar would allegedly sneak off to indulge his vices when Khloe was traveling.

"Every time I would leave town [when] we were married, this happened," she recounted. "I just didn't think he would still do the same thing."

WATCH: Lamar Odom Opens Up About Khloe Kardashian Divorce: ‘We’ve Been Through a Lot’

To make matters more suspicious, Khloe revealed that Lamar asked her for cash before the left for the vacation, which the family took back in May.

"I already know that he was like, waiting for me to leave town," Khloe said to her friend, Malika Haqq, while out to dinner in Cuba.

"You've done everything you can do," Haqq said, trying to comfort her friend. "You can't control him. You want to try and be the best, but honey, if he wants to run himself back into the gutter, he's gonna do just that."

WATCH: Khloe Kardashian Says 'Just Pray' After Lamar Odom Reportedly Removed From Plane Drunk, Vomiting

Around the time of the Kardashians’ Cuba trip, Lamar was photographed at a bar, drinking alcohol against doctors’ orders. After photos of her ex surfaced, Khloe tweeted a cryptic message, reading, "Damaged people are dangerous, because they know they can survive."

For more on the on-going drama between Khloe and her ex, check out the video below.