deadmau5 and Kat Von D end relationship Kat Von D and deadmau5 arrive at the 55th annual Grammy Awards at Staples Center in Los Angeles on February 10, 2013. LOS ANGELES, June 27 (UPI) -- Los Angeles tattoo artist Kat Von D announced via Twitter she has ended her engagement to musician and producer deadmau5. The former "L.A. Ink" star tweeted Wednesday their "relationship is indeed over" because her former fiance cheated on her. The couple announced their engagement on Twitter six months ago, EW.com said.