Before a man marries a woman, he may tell her that he is going to Europe for 2 weeks, then take a trip to Europe. The man ceases contact with the woman and if the woman cracks, goes insane, and doesn't know where the man is, she probably isn't going to make a good wife.
JB gave Em the Europe Test inadvertently. It didn't work out.
The benefit of having free flow of information between a person and their significant other, regardless of how confided that information may have been.
Jenny: "So tell me about how you're going to break up with your boyfriend"
Jane: "I only told Jake that! I am mad that you know!"
Jenny: "No, we have relationship privilege. You should've expected this"