Deadmau5 is speaking out after his former girlfriend Kat Von D essentially slammed him on Twitter. The tattoo artist took to her social media account to announce her relationship with the the electronic-music producer/deejay has ended and insinuated that he cheated on her. Though Deadmau5 said that he hooked up with another lady, he claimed it happened when the on-again, off-again couple took a break.

Deadmau5 went to Facebook, his social media platform of choice, to explain his side of the story to his fans: "Kat and I split in November and I moved back home to Toronto. During this time, while we were broken up, I did have relations with another woman," he wrote. "Following that, Kat and I reconciled and I acknowledged being intimate with another person while we were estranged."

"We did move past those issues, and I proposed to Kat in mid-December," Deadmau5 continued. "At the end of June, it was clear that the relationship was not working and we mutually ended the engagement. I was not, at any point, unfaithful to Kat during our time together."

Tattoo artist Kat Von D poses at the premiere of ''Jackass 3D'' at Grauman's Chinese theatre in Hollywood, California
Tattoo artist Kat Von D poses at the premiere of ''Jackass 3D'' at Grauman's Chinese theatre in Hollywood, California October 13, 2010. Photo: Reuters

“I don't wish to go tit for tat with these kinds of pronouncements and don't expect to comment further, but I do believe that those who have expressed concern deserve a more complete understanding of what transpired,” the deejay added.

On Wednesday the “LA Ink” tattoo artist wrote: “Man, I’m a fool,” before elaborating: "Cheating on your loved one is the most hurtful thing one could do. I hate to have to admit that this relationship is indeed over ... Onwards and upwards."

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A day after announcing her relationship with the musician was over, Von D seemed to be looking at the brighter side of things: “There are far too many good examples of kind and honest people in life to waste energy on bad ones. My apologies for losing sight of that.”

Von D has been relatively unlucky in love. She had a failed marriage to fellow tattoo artist Oliver Peck from 2004-2007 and was Jesse James’ mistress while he was still married to Oscar winner Sandra Bullock.