Dear Queenie,
On my birthday a friend of mine told me she knows how old I am because she looked it up on the Internet. I told her if she wanted to know how old I am she should have just asked me.
Queenie, was she wrong not to ask and go behind my back to look it up, or was I wrong the way I answered her?—Birthday Etty Ket
Dear Etty Ket,
Your friend may have thought you would be offended by the question, but in that case she should have thought you would be offended by being told she knew the answer.
Whether you were wrong in the way you answered her depends on your tone of voice and attitude when you said it.