If you're straight and the other person is the same sex and also straight, you're OK being alone together. If you're gay and with a person of the opposite sex, you're OK being alone together. Anything else is risky.
So a straight guy can say to another straight guy "Hey man you have a nice ass?" without legal repercussions?
One more reason to try to work from home I guess.
Trying to judge risk in terms of gender or apparent orientation seems a bit silly to me.