Luckily, Miley - who is engaged to actor Liam Hemsworth - was not at home when the incident occurred.
He was later charged with trespassing and burglary, with Lieutenant Brian Wendling, of Los Angeles Police, stating: “Rivera thinks they were married. I would say delusional is a good characterisation of him.”
TMZ has since reported that a Los Angeles court have found the 40-year old guilty of trespassing and resisting arrest.
He is due to be sentenced later today (12th October), and faces 18 months in jail.