The lady didn't catch the mouse after all.

Tattoo artist and model Kat Von D has split from her boyfriend, Deadmau5.

The former mistress of Sandra Bullock's ex-husband, Jesse James, announced her break up from the popular DJ on Twitter.

"Man..I can't say I didn't give it my best," she tweeted on Saturday, Nov.10. "Man, I sure was wrong. But at least he made it a no brainer to break that off. #lessonlearned."

"Now, we can get all of the "I told you so's" outta the way...And move on," she later tweeted.

And in case her followers were unclear, she was referring to her final tweet she sent: "Clarification: Deadmau5 and I are no longer together."

Deadmau5 also confirmed the split on his Facebook page.

"going to spend a little while screwing my head back on," he wrote on Facebook. "i guess I'm not cut out for relationships right now. and that's all i really wan't to dwell on it right now. ill figure it out. no hard feelings."

The electro-house music producer elaborated on Twitter. "it happened too fast, i lost my balance and fell into a familiar dark place that im having difficulty with. she deserves someone stronger...and thats it for the personal stuff...on with our regularly scheduled deadmau5 crap."

Von D, 30, and Deadmau5, 31 (real name Joel Zimmerman) confirmed they were seeing each other after they were spotted holding hands in September.

The "L.A. Ink" star was previously engaged to Sandra Bullock's ex Jesse James.

In March 2010, after several women announced they were having an affair with Bullock's then husband Jesse James, Von D was rumored to be one of his mistresses.

After Bullock's divorce was finalized in June of that year, the reality star announced that she and James were dating in August 2010 when she tweeted: "I think it's pretty obvious that we're dating."

They announced an engagement in January, 2011 and were on and off until it ended in August, 2011.