If I requested someone as a friend on FB, why would their posts show up on my wall if the friend request is still pending and I have not received confirmation via email that they accepted?

I requested someone as a Friend on Facebook, about a week ago.

I can see from his posts that he is not on often, but he was on yesterday.

When I look at his Facebook, it still says “Friend request sent.”

I have not yet received an email saying this person has accepted my friend request. He is not on my friend list yet.

So then why is it that when he posted something it ended up on my wall?