Responses
No, chase was not raped, it's more like his older brother made him believe, that he slept with other people during those parties using drugs without his consent.
Spoiler if you want : he didn't slept with anyone other than Josh!!! Josh is his first and will be last too!!!! (≧∇≦)/
So Chase was raped in the past and experimented on, I see. I understand why he acts the way he does (still pisses me off but like this is fictional so) but like I still remember you almost killed our beautiful Josh in the first chapter(? Im watching you sir (-)_(-)