Why is it so much easier flirting with taken or married women than with single women?

Why is it so much easier flirting with taken or married women than with single women?
I don't even plan to sleep with them or kiss them taken or married women or whatever but taken and married women are much more receptive to flirting than the single women are and some of them even flirt back ☺.
Single women are somehow aggressive or they give me disgusted looks or they tell me to get away from them (sometimes in the worst possible way). It's no wonder they are single.
I do this because it's fun and i like flirting and I feel much better about myself when I flirt with women and I get more confident when I flirt with women.
Why is it so much easier flirting with taken or married women than with single women?
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