If you give your friend that data, it's out of your hands. If you don't want your email address or birthdate to be known, don't give it to anyone. I pretty muc

If you give your friend that data, it's out of your hands. If you don't want your email address or birthdate to be known, don't give it to anyone. I pretty much opertate from the point of view that anything I send in an email or text is public, and temper what I write accordingly.