Ask him what aspect of your relationship makes him feel uncertain or insecure. Listen to what he says; but make the decision that is healthiest for you overall.
If he says that you can only "prove"...
The best way to prove your were someplace is to have a witness. Another way, is to record it with a camera. Another possibility is to have your name on a sign in sheet, like at a doctor's office.
The defense do not have to prove anything, if the prosecution fail to prove guilt, then the defendant is not guilty (in an ideal world). It may be the case thaat a jury may find guilt when a charge...
You have to be found guilty by a preponderance of the evidence. It is very difficult to prove a negative, however, a good prosecutor can present the facts in a manner that makes an innocent man...
Its important to prove a hypotheses is wrong as it is to prove it right because when you set out to do a lab, you must make your prediction before you start. When you are finished with the lab, you...