Mais il ne parle pas français.
Don Juan, of course, is Spanish, but I think...J'taime, baby, j'taime.
From what I recall, the historical figure came from Venice (but probably didn't look like David Tennant or Heath Ledger). :p
Correct, whether she is gay, straight, bi, non, poly, or whatever (as long as it is between consenting adults) what does it matter?
From a general human standpoint, it shouldn't matter. But there is plenty of discussion about coming out as an actor and what it does to your acting credibility in certain roles - and that's even coming from out gay actors. For example, would Richard Chamberlain have been as big a romantic leading man had he been out at the time? And the argument is, probably not because a lot of the market for romantic leading man vehicles (heterosexual woman) wouldn't respond as well to his acting in those roles knowing they (and the leading woman, for that matter) really wouldn't stand a chance with him. Part of the power of the romantic lead is how they connect with the viewer. Knowing they bat for the other team may undermine that connection.
So I while I look forward to a day when having any particular sexual orientation is as unimportant to how we judge someone as the color of the socks they wear, I can understand certain people playing coy or hiding their orientation if they think it will undermine particular ambitions. I won't think of anyone negatively if they choose to stay closeted for those reasons.
Tell that to Neil Patrick Harris and Barney Stinson.
He's not really a romantic lead either. He's a Lothario caricature, not really meant to connect with viewers as a romantic lead. I'd even say that the fact that Neil Patrick Harris is well-known to be gay makes his portrayal even funnier.
For people who knew Jane Lynch was gay, her role in 40 Year Old Virgin might have been funnier as well.