The 29-year-old TV personality and the NBA player only knew each other for a month before deciding to exchange vows, but after a turbulent relationship over the past few months, Khloe appears to have had enough.
Sources revealed to TMZ that Khloe will be citing ''irreconcilable differences'' in her divorce papers and the split should be quite straightforward because they don't have children and don't have a prenup which has kept all their assets separate.
A source told Us Weekly: ''She flip-flopped several times, but she can't imagine having kids with someone who refuses to seek help for his disease.''
Another insider revealed: ''She's saying, 'I'm moving on.'''
Lamar has reportedly been struggling with drug addiction for a while but has refused to go to rehab and seek help. Khloe was determined to stay by her husband's side during these difficult times, despite rumours of his infidelity.
A source told Hollywoodlife.com: ''That's just not something he's willing to do. He knows his marriage is over, so what's the point? And he really doesn't think he has a problem with drugs or anything else
''He's putting all his energy into playing basketball even though that situation isn't going to happen. So you see, Lamar is all over the place and delusional.''
However, the last straw for Khloe was apparently when a disturbing video of Lamar surfaced on TMZ. The recording showed Lamar and a friend rapping topless, looking intoxicated and boasting about cheating on Khloe.
In the video, Lamar said: ''And when Khloe's out of town, I still be on the DL.'' His friend then raps: ''You know what it is, we the QU pimps, ask any of these shorties, we ran through their cribs.''