(Everett, WA)  --  A 19-year-old man who's accused of shooting three people to death at a Mukilteo, Washington house party is facing charges of aggravated murder and attempted first-degree murder.  Allen Christopher Ivanov is charged in the deaths of Anna Bui, Jordan Ebner, and Jacob Long, all 19-years-old, and the wounding of 18-year-old Will Kramer, in the shootings last Saturday.  Police say Ivanov told investigators that he committed the murders because Bui, whom he used to date, was moving on with her life.  Ivanov is being held without bail.