You don't have any "control" over your partner because that's not being in an actual relationship. You are in it together and you do things to communicate, to build trust, to work through the hard aspects of being with someone else for an extended period of time - together. And part of communication is setting the parameters of the desired relationship before you really get into it. You each talk about how you want to treat each other, what you expect, what you feel is acceptable and what's not. That's fine. For example, some people think a man watching porn is cheating, and some people think that's no big deal, including many women. But you need to work that out between you very early in the relationship to determine how you both feel about something like that (as well as other things) and determine how is agreed upon to be acceptable and what is not - that you both agree to.

If either of you breaks agreements that you have, that's a problem, but you need to agree what those things are by talking about them in the beginning of your relationship - together - not by acting like her father who has the right to control her movements, actions, clothing, and speech. Because she's an adult person, not a child, not your possession, not your puppet. If you don't trust her, don't be with her, because that's a shit relationship that has no trust. Better to create a real relationships - together.