Kat Von D and DJ Deadmau5 have parted ways.

The 30-year-old tattoo artist announced their split on Twitter Saturday in a series of tweets.

"Man . . . Can't say I didn't give it my best," she wrote. "Man, I sure was wrong. But at least he made it a no-brainer to break that off. Lesson Learned."

In mid-September, a source confirmed to Us Weekly that Kat Von D and the Canadian DJ, 31, (real name: Joel Zimmerman) were dating after meeting at a party.

"Now, we can get all of the 'I told you so's' outta the way . . . And move on," she tweeted Saturday. And in case anyone was confused by tweeting, Kat Von D added, "Clarification: Deadmau5 and I are no longer together."

Prior to dating Deadmau5, the LA Ink star had an on-again, off-again relationship with Sandra Bullock**'s ex, Jesse James.

The two became engaged in January 2011, but called things off for good in September 2011.

After the split, Kat Von D wrote on Facebook, "Today I encountered the 19th girl to add to the list of people Jesse cheated on me with during this last year."

This article originally appeared on Usmagazine.com: Kat Von D Splits From DJ Deadmau5: "Man, I Sure Was Wrong"