There is no reason why we would not discuss someone's sexuality but as i wrote as an answer to Jane when it comes to historical figures it is nearly impossible to discuss it. When it comes to contemporary Royals the discussion can be held as they could very well use terms like gay/lesbian or bisexual to describe themselves.
In the Netherlands there has been a statement of the late prince Friso that he was heterosexual and not as was rumoured in the media gay.
It's a shame he felt he needed to comment on his sexuality at all.
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