I am writing a fiction novel though based in real world. The main character (NAME_1) is a college student who has been planning a trip with his girl fried (gf). However, his gf breaks up with him over text and disappears for over a week. A sex tape video is floated around the campus where the gf is having sex with a bunch of guys. In the video, the gf says demeaning things about NAME_1 like him not being able to satisfy her in bed, him being too upright. NAME_1 then finds his gf near his house in a box addressed to him and sees she has injection marks over her neck implying she was heavily drugged. He immediately admits her to the hospital and asks if she wants to file a police case as he assumes she was raped. However, the gf refuses it and also says she doesn't want to be near NAME_1. 

NAME_1 is very confused. He can take that the gf was not into him, but he is unclear why her sex tape was uploaded, and why was she boxed and sent to him. He believes there is some hidden conspiracy by those who raped her, and that there was some other motivation. 

Can you suggest some hidden motivation by the culprits? Perhaps having to do with the gf, the NAME_1 or maybe their families?