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Just less than a week after getting busted for driving under the influence, Lamar Odom has checked himself into rehab. Khloe reportedly gave her hubby an ultimatum last weekend, saying-- rehab or their marriage was over, but she had no idea he was actually going to do it. She reportedly thought she'd have to be more forceful. She's said to be happy nonetheless though, that her husband is seeking professional treatment. 

[source]