You don't always have to be looking at people to know if they are looking at you or not. I hate when people say "you must be looking at them if you know they're looking at you so much", also I can SENSE when someone is staring too.
I consciously avoid eye contact with strangers, and try to look distracted (looking in shop windows, etc) and I walk up straight to look more confident, but I still see people looking as I pass.
I have convinced myself that I look more freakier than the most horrifying deformed (probably photoshopped) thing you've ever seen on the internet, so that makes everybody look at me thinking "Jesus wept, who let that weirdo out of the looney bin! Oh my God she is the weirdest freak to ever walk this planet". No matter how NT I act or how trendy I dress and how well I blend in, I still think that everybody literally thinks I'm a freak with 3 heads and 8 claw-like arms flailing about manically. Either that, or I glow very brightly, like a florescent green that catches people's eyes.
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Female