Why does kindness/nice equal gay?

As far as I can tell I'm a pretty normal guy ion dress feminine I don't have any feminine mannerisms as far as I can tell. But I often just get assumed to be gay by females not all but like it happens way to often for me to ignore and I don't understand why. I did ask around and was told it might be because I'm nice and I'm tryna figure out if this is true? If it is since when was this a thing and why cause it doesn't make any sense?
Why does kindness/nice equal gay?
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