Khloe Kardashian and Lamar Odom are effectively separated after a drug problem drove them apart, TMZ reports.

Odom has been addicted to "crack cocaine" for two years, the celebrity website claimed over the weekend. Odom went to rehab, despite resistance, and stayed clean, but after his season with the L.A. Clippers ended, he relapsed.

Last week, the Kardashian clan reportedly staged an intervention to convince Odom to go back to rehab, but he wasn't interested.
STORY: Mario Lopez to Return as 'X Factor' Host, Khloe Kardashian Out

Wednesday morning, Kardashian threw Odom out of the house, "effectively" declaring a separation, multiple sources familiar with the situation tell TMZ.

But neither the reality TV star nor the athlete has contacted a divorce lawyer, sources tell the celebrity website.

Kardashian kept Odom's drug addiction a secret from her family for much of their marriage, according to TMZ, only telling sisters Kourtney and Kim about it very recently.

VIDEO: Khloe Kardashian on 'Khloe & Lamar's' Indefinite Hiatus: 'Our Show is Not Canceled'

In fact, her disclosures about Odom's drug problem came after rumors started circulating that Odom had been sleeping with other women. While Kardashian is convinced that he did cheat on her, drugs are the main problem, TMZ reports.

The Hollywood Reporter has reached out to Kardashian's publicist, Odom's agent and E!, but we have not yet received responses.