Khloe Kardashian-Lamar Odom Divorce Rumors: Drug Abuse AND Cheating to Blame?!

by at .  Updated at .

Khloe Kardashian and Lamar Odom's marriage is on the rocks, and it looks like more than just idle gossip about Jennifer Richardson and Polina Polonsky.

Reports say he has a serious drug problem.

Khloe Kardashian Red Karpet Photo
Lamar Photo

The 33-year-old NBA player has battled drug addiction for two years, and it reached the point last summer where she pressured him to go to rehab.

He did so, but Khloe Kardashian was so skeptical of his sincerity that she hired private investigators to wait outside 24/7 to make sure he didn't bail.

After three weeks and at least that many arguments over him leaving, he bolted for good, but did reportedly stay clean through the 2012-13 NBA season.

When the season ended this spring though, Lamar's recreational drug use returned. As for the persistent cheating rumors that have dogged him?

Both Jennifer Richardson and Polina Polonsky have gone on the record, and into detail, claiming they had sexual relationships with the NBA star.

Khloe believes Lamar did in fact cheat on her, but feels that's almost secondary to his drug problem, which she's treating as the primary concern.

It's that bad.

"Khloe is more concerned about saving Lamar than ending her marriage," a source tells TMZ, adding that Kim Kardashian's younger sister is not divorcing him.

At least not yet. She hasn't hired a lawyer (nor as he), and she recently posted a pointed message to the haters, telling them simply not to judge.

And get this: Khloe and her entire family are believed to have staged an intervention last week, trying to convince Lamar Odom to go back to rehab.

He was not receptive to the idea, and so after the intervention failed, Khloe threw Lamar out of the house. Odom was seen putting some stuff in a friend's car.

Crazy stuff, and certainly not encouraging for Khlomar, though if you're looking for a silver lining, it's clear she does not want to throw in the towel.

Some people might get married just for TV ratings, then end it after 72 days, but this is not that. Khloe is willing to forgive a lot ... IF Lamar cares.

It sounds serious, and if they do split, it won't be for lack of effort.

UPDATE: According to a new report, Lamar Odom's drug of choice was a serious and potentially deadly one: Crack cocaine. He has still not commented.

Story developing ... comment and vote below, THGers:

Khloe and Lamar: Should she divorce him?

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Khloe Kardashian Biography

Khloe Kardashian in Soho
Khloe Kardashian is only famous for being the sister of Kim Kardashian. She stars, along with the rest of this stupidly-named family, on... More »
Full Name
Khloe Kardashian

Khloe Kardashian Quotes

I did wear fur and they wanted to educate me on the brutal ways in which animals are skinned for their pelts.

Khloe Kardashian

They released me early because I was a threat to the prison.. The whole prison was on lockdown. It was actually really scary.

Khloe Kardshian [on early prison release]