What is their intention?

So in my early 20s I started wearing a full face of makeup to attend parties/weddings and ever since I've had these 'problems' with guys. I mean I've had guys who steal glances, stand ahead of me and stare until I pass them, stare as I drink my coffee and step out of where they're standing to stare at me as I walk to the other end of the reception area, (my friend saw this and thought it was creepy). I can't label all of them as creeps, but it's awks and none of these guys have any intention of approaching me altho they've been doing it for a year.

What is their intention?
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