Bi-sexual males
No such thing. You either do or you do not.
It is not my distinction, it is one society and prolific sex addicts place on what they call a normal range.
On of my grandsons has experienced both, a boyfriend and a long term GF. I just call them Omni-sexuals.
“You have your needs I have mine” is the culture.
It comes from the lack of shame, and body count is a thing for the younger people.