A good friend is visiting your home for the weekend.
She's taking a nap in the guest room; so leave her at your home alone while you pop out the market for a few last minute dinner party (you're throwing one in her honor) items.
You return about an hour later to find her sitting on your bed reading your journal which was tucked away in your nightstand.
It is obvious that she was not expecting your return.
The both of you are equally startled (for different reasons, of course).
What would YOU do?