If I recall right, Christy said in an interview that she has another main job (not porn related) and porn is just for fun. Unless she is lying, porn is not her main source of income and I think it's fantastic that her BF is cool with letting her continue to do porn. In most relationships your partner usually has a say in your decisions, but ultimately you are your own person and decide on what you will do. War Machine is obviously secure and doesn't mind, but most normal dudes would try to make their GF quit porn.