Based on my experiences with various girls dated, they are not into it. A rare handful of them were into the idea of two dudes kissing, and maybe even doing the helicopter, but not really sex. Particularly commented upon, in a negative light, is the perceived aggression inherent in gay male intercourse.
The most recent story I heard related to this is from a girl who lived under a young, gay male couple. She told me how incredibly loud it was and that she was ‘traumatized’ from the experience.
Here’s the thing, two males sharing two dogs and four dice = two less-masculine males (to the female mind).
Two females + a roll in the hay = two girls that are no less feminine, or are perhaps extra-feminine. Viewing males in this light detracts from the very essence of their attraction to males.
On a different note, most or all of the girls I mention are fond of gay men and or have them as close friends. They just don’t seem to have a desire to watch it all go down. But who knows, I am certainly no authority.
Personally, I don’t like watching any other people have sex, at least nothing too hardcore. Some happy ending and Charmin squeezing is ok, I suppose.