well basically she wants to sit on you or get your attention
Move.
If it was a girl then he probably likes her
ask her out ...is she hot???
Yes or he may be homosexual
that she wants to know you more or that she likes you
It could mean he likes the girl
It doesn't necessarily mean he is attracted or interested in her but she is seemingly interested in him.
If she shows you visible interest in you, I would say she might like you
She's giving you a better look at her boobs.
depends - is she staring just because you are? If not, go for it!
They have a crush on you and you say "I know you like me so how 'bout a date, Saturday night
He doesn't care or he is trying to be cool and ignoring it.