i am not sure what you mean by your vague question. if your boyfriend is a responsible adult he should be taking care of himself. living in his own place paying rent/mortgage cooking his own meals working etc. if you are referring to masturbation than you need to say so. don't be jealous of a masturbating boyfriend. he is not cheating on you by pleasuring himself. if your sex life has suffered because he prefers masturbation over intimacy then you need to have a heart-to-heart talk to see how you might spice up your relationship. this starts with open communication. you have to talk about it.
i have been with my boyfriend now for eight years and it seems like he would rather take care of him self.