>>528129908
>>528129243
Fatefag here, headcanons aside Astolfo refers to himself as a man, even if he is crossdressing because of his sanity condition.
He is obviously both into men & women, but there are no indications on whether he's dom or sub. Although his brazen and outgoing personality makes me believe he's leaning into the former more.
As for morality, the guy was depicted to be leaning more into vanilla with extremely rare instances of flirting with others. But do not forget that he's a psycho so he might not think much about that.
But be free to do whatever satisfies you.