TV personality Khloe Kardashian attends the NBCUniversal 2016 Upfront Presentation on May 16, 2016 in New York, New York. (Source: Slaven Vlasic/Getty Images North America)

*After Khloe Kardashian filed for divorce from Lamar Odom again, they seem to now be acting the way many bitter couples react – by not speaking to each other. Allegedly, Khloe is over dealing with Odom’s ridiculous behavior, so she has cut off all ties with the addict.

A source tells PEOPLE that it was Khloe’s decision to cease communication with Lam Lam. According to the insider, Kardashian had “grown frustrated with Odom’s behavior in recent months, during which he was spotted drinking more than once despite being in recovery from a near-fatal overdose in October.”

“The times she went to see him recently, he was pretty messed up,” the source said. “She’s sick of it. She feels like she’s done everything she can and it’s just ridiculous at this point.”

READ RELATED STORY: Khloé Kardashian Considering Restraining Order Against ‘Desperate’ Lamar Odom?

Kardashian is still legally wed to Odom, but she filed for divorce for a second time in May. At the time, a source told PEOPLE: “Khloé cares about Lamar and he’ll always be in her life, but there is only so much you can do for a person.”

“You can’t help or fix someone who won’t fix themselves,” added the source.

Although Lamar vowed to never hurt her again, it looks like he’s gone back on his promise. A different source told PEOPLE that the former NBA star has fallen back into old habits.

“He is a sad mess,” said the insider, who added that Kardashian and her family fear Odom might relapse. His body is not back to normal and it never will be,” said the source. “There is a fear that he will again have an overdose.”

“Keeping Up with the Kardashians” airs Sundays (9 p.m. ET) on E!