Well...this is what a man would usually do he will just stand in a spot and just look at you with a tiny grin and he would play with his hands a lot
I would smile, wave and when she is alone strike up a conversation to get to know her better. :)
If the man has diabetes.
Keep this to yourself do not let him know it is your greatest secret!
ask her who she likes
You will just know. Trust me man, trust me. I've had much experience.
I dont know, it is different for every guy. I would recommend asking him what it is that he likes best.
Get to know her.
this is simple get to know this girl
most guys tease the girl he likes, so probably
If a guy look at the girl twice then it means she likes the girl
He likes you.
That means he girl likes you and answer that question by telling the girl something she likes to do. If you don't know what the girl likes to do then you're a goner
I gess the same way you can tell if a normal girl likes you.