Kim Kardashian and Kanye West’s six-year marriage is coming to an  abrupt end.

According to E! the world-famous star has yet to officially file for divorce.

After six years of marriage and more than eight years together, the E! reality TV star and rapper are going their separate ways. Kim, however, has yet to file for divorce.

Kimye, who went public with their relationship in April 2012, share four children together, North West, 7, Saint West, 5, Chicago West, 2, and Psalm West, 20 months.

“It’s gotten to the point where they haven’t spent time together as a married couple in months,” a source tells E! News exclusively. “They’ve seen each other for the sake of the kids but have been living separately. Kim knows the marriage is over. She’s known for a while.”

So why hasn’t Kim made the separation official? Our insider notes, “She wants to make sure she’s making the right decision for the kids.”

Adds the source, “It’s not about the marriage anymore, she’ll always care for Kanye but it’s over between them. Kim is only focused on what’s best for the kids. It’s a tough decision for her and she’s figuring it out.”

In recent months, the couple’s relationship has faced increased pressure from both external and internal forces. Back in July, Kim spoke out for the first time publicly about Kanye’s mental health following a series of Twitter sprees about their family.

“As many of you know, Kanye has bi-polar [sic] disorder. Anyone who has this or has a loved one in their life who does, knows how incredibly complicated and painful it is to understand,” Kim said in part. “I’ve never spoken publicly about how this has affected us at home because I am very protective of our children and Kanye’s right to privacy when it comes to his health. But today, I feel like I should comment on it because of the stigma and misconceptions about mental health.”

In her message to the public, Kim called for compassion and privacy for their family.