This is a very good question that I think everybody should know the answer to and vice versa.
Should your husband or boyfriend, have close female friends? Where he always feel the need to talk to her and even call his close friend his sister?
If so explain and if not explain why not?
Also second question, as a wife or a girl friend if you feel uncomfortable with that close friendship, how do you stop it? In my particular case I want my husband to change his phone number but he is telling me that he cannot change his number because he changed his number so many times and so many people call him and it will be difficult again to get all those peoples numbers and call each one to give them my new number again. Then he tells me, don't worry if you don't want me to call her, then I won't. I need your answers guys thanks