What concerns me at this point is that you have reservations about her having sex with other men. That will only get worse the more you get attached to her -- so that doesn't bode well.
It's my experience (but certainly not the law) that someone who goes into the porn industry usually isn't unscathed from the experience. They can often struggle to have a healthy sex life and relationship outside of the industry because of how they end up viewing sex and how they are treated at the job. People who have more traditional jobs often find that the stresses of the job can affect them outside of work -- I can only imagine how that's even worse for someone whose job is to have sex on camera.
Even if you can fully get past the sex part (which it doesn't sound like you can) there is a very real chance you'll find she isn't able to have a healthy functioning relationship.