TEXT: "FILE - In this Friday, Jan. 6, 2017, file photo, real estate heir Robert Durst appears in a Los Angeles Superior Court Airport Branch for a pre-trial motions hearing in Los Angeles. Durst's close friend Nathan Chavin said Friday, Feb.17, 2017, that it took seven months for him to come clean and tell prosecutors what the real estate heir said about killing their close friend. Chavin said he struggled during that time to balance his loyalties to two best friends before deciding to tell ""the whole truth"" about what he knew about Susan Berman's death. (Mark Boster/Los Angeles Times via AP, Pool, File)"