They're the exes that just won't stop fighting.

Though Jon Gosselin and Kate Gosselin were married for 10 years and birthed eight children together — a set of twins and a set of sextuplets — the former husband and wife haven't been on good terms in years. In fact, it appears most of the Jon & Kate Plus 8 stars' bickering has occurred in the media as Jon has maintained countless times that his relationship with Kate is "nonexistent."

"I don't have a relationship with Kate. There is no relationship. Text and email. That's it," Jon has revealed. "The nanny comes out and I exchange the kids at her gate or at the bus stop. I don't physically see [Kate]."

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For those of us who've grown used to hearing these exes bash each other in the media, a fact of life that has been going on since the couple officially split in 2009, you might not even remember what caused their bitter breakup.

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What led the Gosselins to where there are now? From marrying in 1999 to divorcing 10 years later to now relentlessly tearing each other down in the press, we compiled a complete timeline of Jon and Kate's tumultuous relationship.

Keep reading to find out more about the reality stars' relationship ups and downs!