Why do men hit on girls when they can see that they are having a good time without them?

Friday nights we have a girls night out, and there are many of us, so why do some men try to get at us,
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+1 y
well I didn't know there were so many awful people about, you seem to have all got on here
Why do men hit on girls when they can see that they are having a good time without them?
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