Nope, he actually doesn't have any PMs in there at all.

I just tried to send him a PM to see what would happen, and what's happening is that when I click on his name or try to add him to the PM, the "add recipient" field is showing his name until I hit submit. As soon as I hit submit, that field is empty, his name shows underneath it, but when it goes to the next page, it says that the only participant in the PM is me.