Crush

why when someone have a crush on you, after they tell you, you are their crush is so hard to reply and give a right feeling back? I have someone i crush and the person also have a crush on me but when she say she want to give up on her crush, i have a sad and painful feeling so i tell her not to give up but still think that her crush don't like her but the fact is i like her but she dun know until yesterday, when she know i have a crush on her, i really don't know how she feel but when i ask her how she feel she tell me she feel shy and sad because she realise that she want to give up on the person that also have a crush on her. We talk all night and because of my fear of having a r/s i give up on her, but i have many regret about my decision, really feel bad and guilty but i dun wan hurt her more in the future if i have a change of heart that why i think of how she feel that is one more reason i wan to give up on her because i think i am still young still not mature enough i wish i can meet her when i am older then maybe the decision i make will be different i really wish i can be more mature and now i just treat her as a sister but i also wan care for her.......