Any sources about the story with Gunilla (one of the sisters of Ferdinand von Bismarck,a very good friend of him, and more tan 20 years younger then him)

Don't get me wrong

, but I am not a newbie when it comes down to the Dutch Royals (literaly I learnt reading with them

) and I never heard about it.
But otherwise even IF it was like this, it turned out to be a wonderful marriage with much of affections from both sides. (Sorry but these two are my royal Achilles heel

)