AMiGos Help plz !!!!!!! 10 points best answer?

some times when i'm walkin in the mall i find some people or girls staring at me, then when i look at them they turn, and then i turn around they start to look at me again . does this mean that they like me or just lookin at me ???shall i ask her out ? and i'm a good lookin person just a (BIT) fat but it doesn't show