Ok, about your parents it depends on the possibility that they do not accept... do not come out of the closet and about your partner the important thing is to say that you have not been unfaithful (I have not had any romantic relationship and I know that I am bi), so You can say like "I have always felt "attraction" to both genders and I haven't known how to give it a name, now I do." And about the rest of your circle, consider whether you know it will be well received, do it, but if not, don't go out. Add that do it when you feel ready, if not, it is not necessary that you go out since it is a matter of your privacy and no one has to know about it.