Kat Von D: Jesse James 'cheated on me' with 19 women

This probably isn't what Mark Zuckerberg intended when he invented Facebook, but it's too late now. Kat Von D is using the social media platform to trash her ex-boyfriend Jesse James.

In a more than 600-word open letter titled "Thank You, Jesse James," the tattoo artist rips her ex for mass infidelity.

"Today I encountered the 19th girl to add to the list of people Jesse cheated on me with during this last year," she writes. Von D goes on to call their relationship "toxic."

A few hundred words later, she wraps up by saying, "It would be nice to move on now, and kindly thank you all in advance for your support, love, and positivity."

The two began dating in Aug. 2010. They announced their engagement in Jan. 2011 before repeatedly splitting up and getting back together. They broke for good in Sept. 2011.