According to D'Annunzio's secretary, Tom Antongini (who is more apt to say he did than not according to the other biographers),

" in France D'Annunzio did something almost unheard of for him: he made a woman friend in the person of Romaine Brooks, the American artist. I think I may call her unique in that alone of all her sex, she managed to gain and hold the Poet's interest from an exclusively artistic and intellectual point of view.........
(skip description of how she looked like one of his many exes {that kinda happens as you get older; they all start to look alike} and loved to draw and live in black and grey)
.......
He spent long hours with the "Barbarian" as he loved to call her, and he was never bored in her company."

Sounds like a polite Italian way of saying, "nope, they never did." Or, perhaps if they did, she didn't act like a fruitcake like all the other ones seemed to, so Mr. Antongini just assumed they were chaste.

Anthony Rhodes says he did, but he also says at the same time as he made pals with Ms. Brooks he was also rogering a ridiculously high maintenance rooskie (Natalya Victor de Goloubeff), so this seems unlikely. As out hero put it about the rooskie, "she was mad with the blackest of black Slavonic madness."

I think this is the picture, no?
www.marcelproust.it/imagg/da...rooks.jpg
He was reputedly quite fond if it.

-Lupo