You are right, things can and do happen. People do have affairs, children are born - it most certainly can happen. However, that doesn't mean that it is true in this particular instance. I personally, have a very hard time believing that Albert belongs to anyone other than Rainier - and this is just my very personal opinion.
I pretty much operate on an, "I'll see it when I believe it" philosophy. It doesn't mean that I'm ignoring any sort of reality. I know it can happen, but just because it can, doesn't mean that it did in this case. :) Until I see something that will convince me otherwise, I whole-heartedly believe that Albert is the biological child of Rainier.
There are many authors that come along and fabricate stories just to create sensationalism and to sell more copies. That, is a fact. It happens all the time, which I think is very sad.
Shoot for the moon. Even if you miss, you'll land among the stars. ~ Les Brown