Some Women assume your gay if you don't approach/flirt with them. It doesn't mean they want to fuck you. The higher the girl rates her attractiveness, the more she gets confused about the men who DON'T APPROACH/flirt/blow smoke up her ass, because she's so used to being approached, whiteknighted etc by every guy in her enviornment.
I had it happen to me at work. Some random female employee (good looking) said "he's so gay!" as I walked past her when she was standing with another member of staff. I was a 4/10 at the time, she was easily a 6 to 7, so no possibility that she 'liked' my looks etc. It was an attackeither my behaviour (quiet/don't approach people) or an attack on my effete appearance (5'9, 130lbs framecel with gayface at the time)/
Some ignorant people (lots of them, actually), just cannot understand that the more times a guy has been rejected/called ugly/disapproved of..... the more he'll avoid approaching or chatting to women.
And some men just flat out don't want to get flirty with their female work colleagues.