When you view a person, documents are shown that you have shared with them.
When you view a person, documents are shown that you have shared with them. Documents you shared with them appear with documents they sent you.
I'd like to add (or expand on what's been asked) that we could filter what documents I've shared with the user, what documents they've shared with me, or both.
Additionally, tie the above with the ability to filter down on content type would be perfect! Filtering on content type is another suggestion that's already been made.