I live in the "gay district" of San Diego. I am hetero, and have been flirted at by several gay guys. I'm quietly flattered. Same as if some woman I wasn't interested in for whatever reason did the same. No probs. I just like the single life and have not been proven that otherwise is a great idea.
"For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." - Carl Sagan