If her BF had "serious coin", she wouldn't have to do porn in the 1st place.
At some point she's not going to be able to deal w/ the fact that she's losing out on so much money by only doing g/g. And her BF will either have to give her his blessing or hit the road. Its not fair of him to get her to stop doing b/g since thats what she was doing when they met. So he knew what she was all about from the beginning. If he doesn't want her doing scenes w/ other guys then put a ring on her finger and support her completely so she doesn't have to do porn at all. If not, then stay out of her way and let her make a living.