An extremely gudlooking gal always looks in my eyes whenever we stand in different crowds iam too skinny 46kg?

iam a very skinny guy but i look goood :D and by skinny i mean hel skinny like 176cm and 46 kg pathetically skinny but i dont know whenever iam around a very cute girl in our college she looks at me always , we dont know each other but she looks at me at intervals .. i cant be happy cause of my body , shes too gud looking and i dont think theres any reason she should look at me , what do u guys think this cud be ? iam not as fair as her and neither goodlooking anywhere near her .... confused badly as she always gives a glance to me and looks directly into my eyes no matter how many of her friends are with her and whenever she walks away she sometimes turns and looks at me .... i feel so embared of not being an average weighing person 4 first time of my life ..