Now, that’s not to say that all women definitely get turned on when faced with another scantily-clad female. Arousal is very individualized, and what turns on one woman may not necessarily rev up another.
Plus, even if the thought of other chicks does turn her on, she may never want to have a ménage a trois.
“Sexual arousal may happen automatically or subconsciously,” he says. “A sexual or romantic relationship with another woman may not be what she actually wants to pursue.”
So how do you know for sure? Gauge her interest by asking if she’d be into watching girl-on-girl porn with you. If she’s game—and she enjoys it—you can then bring up the idea of a threesome in a comfortable place, like her apartment or your home.