Unhappy Anniversary! Kim & Kanye Spend Marriage Milestone Apart

Kim Kardashian and Kanye West posted gushing messages to each other on social media yesterday to commemorate their fourth wedding anniversary — but behind the scenes, there's trouble in paradise, as RadarOnline.com has exclusively learned that thy spent the milestone apart!

The troubled rapper, 40, is currently in Jackson Hole, Wyoming, working on his latest album, while Kardashian, 37, was spotted leaving a filming studio in Los Angeles last night nearly 1,000 miles away.

As RadarOnline.com reported earlier this month, the mom of three was considering divorce from her erratic husband after he went on social media rants and TMI interview sprees, even going so far as to admit he got liposuction and became addicted to opiates.

“She’s been having a breakdown herself over all of this, and has been crying to her mom and her sisters," a source told RadarOnline.com at the time.

Despite the drama, the pair put on a united front on social media.

“4 years down and forever to go ....Thank you babe for giving me our family and caring so much about us. Thank you for inspiring me on a daily, I’m so lucky. I can’t wait for forever... Happy Anniversary,” Kardashian wrote on her Instagram page alongside a photo from their 2014 wedding.