Bobby Cannavale is no stranger to appearing in projects with partner Rose Byrne - but his sexually explicit cameo in Platonic might come as a surprise to some. During the season 2 finale of Platonic, which premiered on Wednesday, October 1, Charlie (Luke Macfarlane) faced writer's block while trying to write a novel about a fictional character named Brett Coyote. Charlie had visions of Brett (Cannavale) acting out scenes from his book, which ended with him pleasuring himself.