In october Rumer Willis was on an episode of Red table Talk, where they discussed consent. She spoke of an experience she had, where she had been hanging out with a guy for a while and he had overstepped her boundaries after a night out. She said she felt discomfort and he had zero awareness of it. At the time I did not think anything about the person's identity but people are saying online that it may be Armie because she was pictured with him in September, so this would fit the timeline of events. Also, Effie says she think it is him. All speculation, of course but who knows?!
Red Table Talk (she speaks about the guy at 13:27):