1 sided love :-(

i love my best friend for the last 3 years. but the strange part is that we both have never met each other personally-actually we had came into contact on orkut. though we have not seen but we are best-best buddies. after some time i started loving him and one day i even expressed my feelings for him but he said NO as he still love his 1st one sided love but that girl has already been married for the last 1 n half year but my friend cant think about anyone else rather than her. i m 20 n he is 25.. in d next 2 yrs he might get married. ii really cant thnink about myself without him.. i tried myself to stop loving him but its realy not possile.what to do? help plzz.......