My GF 19F and i’m 20M recently have used words like ‘rough’ and ‘violent’ when having sex. I have asked her what specifics and she doesn’t really know. She just says she enjoys getting controlled and me doing what i want in a physical manner. I tried to go slightly rougher with her and she enjoyed it. With her not telling me what exactly she wants how to i please her in the bedroom. What type of things can i do. Is this normal?