Can't tell if user with protected tweets is following me using Tweetsharp

Question

I've used the method indicated here:

http://stackoverflow.com/questions/2525791/how-to-see-if-a-user-is-following-you-on-twitter-using-c-twitter-api-wrapper-twe

to retrieve whether or not a user is following me, but I've found that if a user has protected their tweets, the script returns the following error:

You do not have permission to retrieve following status for both specified users.

Is there any way around this? I can see who the protected user is following on the Twitter website, but this can't seem to pull it.

Just as a note, I am using OAuth, so that's not the problem.

Thanks for any help.