From my point of view (straight male), two women together is gay, by definition. Straight men enjoy watching/participating with women, in all scenarios, even with other men (with no touching of male bits).

I have no interest, and have no part of me that is sexually aroused by other men, but I am not afraid to show other men affection, by hugging dancing touching etc. and also enjoy the company of gay men, because the ones I’ve known are an absolute blast to be around.