I am not sure I'm representative of an average woman. Yes agree guys think women would like it, because they imagine if they were a woman they'd like it.

But as a woman who has done this both with straight guys and bi guys, it is so much fun! I am not bi but even if I was, there just doesn't seem like anything I can do with a woman that I can't do with a man. But there are things one can do with two guys that you can't do with one.

It's probably happening more than you think.