What can i do? please help me?

i am a lecturer. now i think i am in love with one of my student. though i know her for the past one year i was feeling like this about the last one months. i want to talk to her always. i was thinking about her even in the midnight. what happend to me i dont know. i cant able to find whether it is a infatuation or love. but the time increases the desire also increases. i also know that she is not feeling like this. if i propose her what she think. what other her friends think of me. they may think of other gents staffs in future if he is good in nature. but i cant be myself. what i have to do. i know much about her and her family. i know that her family will not like this love.what can i do i am in high depression. please guide me guys and girls . i am also a guy who is never having many girl freinds. and not much know about girls and their feelings about guys. what i have to do to make the girl love me. Girls also guide me . please..........