Regular sexual life can make people happy, but too often it will do harm to the body. You can instill more health care knowledge into your boyfriend, so that he can be temperate for the future and health.
From your description, I think you lack a space to respect each other and cherish their ideas.
Men will ask their wives like children. Is it because you never refuse him that you are inconsiderate of his wife? It's family background. His family spoiled him too much. But I think you can at least make him respect you and respect your "no"
Women should know how to say no and tell their needs.