Well mit depends on who it is. If it is your girl/boy friend chances are that they want to kiss you,however, if it is not it is most likely nothing to worry/think about.
yes if a girl stares at u all the time that shows that, possibly she like u yes if a girl stares at u all the time that shows that, possibly she like u
It could mean she likes you, but not necessarily loves you.
Most likely
It means that he likes the the girl, or it could just mean that they're close
depends - is she staring just because you are? If not, go for it!
Her lips
I definatly think yes . Maybe try to drop some hints .
He probably likes you
It is normally considered rude to stare at people, so if a girl stares at you for a long time, this suggests that she is not well behaved. Possibly she is overcome by lust and longs to mate with you. Or she is just trying to figure out why your hair looks like that.
They probably like her.
He likes you.
if a girl flirts with you stares at you for a long time or follows you around that could be a sign of love.