does your lover really love you too?

i don't know about her but i love her so much that she is always in my mind. i have been loving her in my thoughts for last 4 years, fifth year is going to end now may be i l never see her again after this year. still i can't speak my mind in front of her. its just i think its too complicated and i would hurt her, and thats the last thing i wanna do to her or see her crying.when when cries i cry in my heart, even some one touches or talks to her i feel fire in my body, may i am just jealous or just care too much,thats what is the point i still don't understand completely, i tried to express it so many times and she thought i was joking, whatever happens i ll always love her all my life.