I am sharing with you a confidential talk between two persons. Is it not a vague writing? if we state above the confidential talked between two persons. Confidentialty means between two person , they can share the secret between themselves. Those two persons should be friends and it should not be shared further only then that confidentialty stay on. When two friends share any type of confidentialty. It is only upto social environment and upto personal level. As long as this confidentialty does not harm or wage enmity between the two persons.