Why do I get male attention when wearing makeup, but no attention when going without?

So, I have a boyfriend that thinks i look good with and without makeup. He says that I dont look that different when wearing makeup, i look similar to when not wearing any. So my question is why i get this extra attention from men. Literally, they stare, smile at me, one guy asked if he could sit beside me and talk with me. I said no obviously. But, also when girls look at me, they think problably that i am pretty too, but o get side eyed and bitch eyed by many girls that see me.. I don't know why. Haha. So when i wear no makeup, i get no attention, from nobody and its like i look more average i think.

Why do I get male attention when wearing makeup, but no attention when going without?
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