May want to remove the name from your post. We aren't allowed to post names on the forums.

That being said, are you sure this wasn't a coincidence that you disconnected when he started sending you friend requests?

If you go /busy, you won't be able to get friend requests, FC invites, or /tells. Otherwise, you can always just blacklist a person who keeps sending you friend requests that you keep denying. Or, as someone else suggested, just let it sit there. Because they can't request twice if you have one pending.