You stare at them too long and they turn away because you were either hideously ugly or you were giving them the pedofile look.
If he shows other signs that he likes you he probably likes you.
It depends on your personality.
He has a crush on you. Next move is yours.
Then you guys like each other. So make your move. ;)
stare at you, be more caring with you than they are with other people, if their shy they might quickly look away when you look at them(this means he was staring at you), their close friend might be nicer to you then he used to be..idk...
a look is just looking and a stare is looking at the same thing for a long time
Because they like you and other guys. They dont know which guy they like more. (Its funny i know this when im a guy)
be brave, smile! :) if you dont want him to know you like him, just dont tell anyone you do . and if you do want him to know, give him a good stare and a big smile!!!!
If they are shy they might look at your feet. If they rent shy they will stare you right in the eyes especially if you have pretty eyes.
Personally, I think it's fine to look at them every once in a while, but once you start to stare at it for long periods of time, you'll know that you're starting to obsess over her/him.
He probably likes you too.
It's possible that he may be interested and trying to catch her attention again or he may just be naturally drawn to her. However, it would be best for him to directly approach and strike up a conversation to show his interest rather than just walking past repeatedly.