Likely NONE of them. And women often have had bisex with their female roommates and sharing a boyfriend is like a sacrament shared between the two females. In some cases, having a male present can legitimize in their minds their being bisexual, especially if they perform in front of the guy. How I know? Previous experiences in college plus having had sex with college women as an older guy and having really deep after-sex conversations where topics like this come up.