If he shows signs as smiling winking and tries to make physical touching and complementing then you can tell he likes you.
She looks at you in a special way and likes to touch you.
if they are picking on you that means he or she likes you or if they tell you
It's up to the girl.
She likes you, she is showing signs that she is comfortable around you.
not applicable to the situation you describe.
You can come sraight out and ask her
to tell if a girl likes you: she will probably blush a little, and look at you when you're not looking.
When he says: i <3 u
Then will probably laugh at every thing you say and follow you around
Send her signs, or ask her out.
he will flirt with her talk to her allot laugh with her &&are really close friends