how does it feel

i have these feelings towards this person for the past eight years. and no matter what i do, it seems that i can't get him out of my system. i mean i could have done this a very long time but i just can't. there are times that i tried to but still, there are some instances and situations or things that makes me hold on for the feeling. i no longer know what to do. he's not paying attention to me, we never even had a nice conversation with each other and we're not even at ease with each other. and still, i feel the same way towards him. it's so unfair. would there be any possbility that i might fall out of love for him? nah, i don't think so. i know it sounds crazy, but i made a vow to myself that i will only stop liking him if ever: 1. he tells right in front of my face that he doesn't like me and i should look for someone else 2. he already got a girlfriend or 3. he gets married those are the things that he has to do to get rid of me. my friends are advicing me to stop my feelings towards him but i don't know if i could do away with it. i just don't know. it's so sad that you can't have what you want sometimes.