Johnny Depp and Joelle Rich are keeping it casual. The Pirates of the Caribbean actor and his former attorney — who previously represented him in his U.K. trial — sparked rumors of romance after the legal mind was seen at Fairfax County Courthouse alongside Depp throughout his $50 million case against estranged ex-wife Amber Heard. Sources confirmed Rich was there as a support system for the Black Mass actor only, noting she was not legally involved in the courtroom drama. However, as rumors swirled that things may be getting serious between the two, an insider clarified that despite dating th…