Why does this girl continuously stare at me?

Anonymous
There's this girl who is in my year and she continuously stares at me all the time! She mostly stares at my body; stomach legs waist etc but other times she will openly stare at my face

the first time I met her she gave me the once over and looked me up and down in a judgmental way - that made me feel self-conscious from the start

but since then she just continues to stare at me, like for instance the other day I was helping myself to a biscuit and she was staring at me eating this biscuit! I turned away cause I can't be bothered to put up with it anymore

when she stares at me it makes me feel like I'm fat, but people always tell me I'm tall and slim and look great in any outfit. I'm 130lbs and 5'9" and I've never considered myself fat

she is bigger than me (no offence) but she is quite overweight, so why is she constantly staring at me in a judgmental way?
Why does this girl continuously stare at me?
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