Why does the girl not express her feeling when she is so much in love with the boy?
A boy either loves you or not and if he shows the affection towards you, you can be sure that your proposal will not be turned down.
In my experience girls are very mysterious creature. They are in love, not in love and undefined. I don't know what goes on in their mind, even if a girl is in love with you, you cannot be assured that your proposal will be accepted. She may still be want to be only friend with you with full of love inside.
Why are girls not straight?