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Getty Images North America 1 / 11

Khloe Kardashian has already pulled the plug on her marriage, but now she's cutting off her estranged husband, as well.

The "Keeping Up With The Kardashians" star's decision is based off of Lamar Odom's rumored drug habit.

"He is using again," a source told Us Weekly. "So Khloe had to put her foot down and stop helping him out."

Khloe, of course, was there for Lamar when he nearly died after an overdose at a Nevada brothel. She essentially put her life on hold to care for him as he clung to life.

Lamar's demons have been well-documented throughout the years, but Khloe and many of his friends hoped his near-fatal incident was a wake up call. It wasn't. He's been seen drinking at several Los Angeles bars since he recovered.

In early June it was reported that Lamar scoffed at the idea of rehab during an attempted intervention, in which friends allegedly noticed drug paraphernalia scattered all over the place, including crack pipes, baggies and roaches.

"More than ­anything, Khloe wants to be in ­Lamar's life," Us's source said, "but only if he gets healthy."

Khloe, the source said, "can't watch him fall apart again."

After his hospital release, Khloe leased a home for her estranged husband in the same gated community as her home. She has since kicked him out, due to his suspected drug use.

A friend of Lamar's, though, argued that the former NBA star isn't back on drugs, but added, "He has definitely been partying," a reference to his drinking at several Los Angeles area bars.

There were many who thought that Khloe and Lamar would end up back together, especially given all they've been through. But, on May 26, though, the reality star filed for divorce again.

Much like the first time she filed for divorce, Khloe cited "irreconcilable differences" as the reason. Multiple outlets have said that she is very upset that he is drinking again.

The first time that the duo split, reports said that Lamar was deep into crack cocaine and the alleged drug use was the principle cause of the demise of his marriage.

"I loved him always, and I will always love him," Khloe said of Lamar after his overdose. "I don't believe love is fickle. I believe when you love someone, you are allowed to love from afar. You don't have to be with that person in order to love him."