what is the cost of loving someone who don't even love you..?

lots of things to be considered if that is the case. he/ she may love you back or intimidate you or maybe take your love as for granted. it may hurt you, you know. if you are really that decisive to win him/ her, then do the best you can: taking care of the person, make him/ her happy and such alike. but if these things did not work for any reason, accept the fact and it is better to befriended with the person rather getting hurt most of the time. good luck

Loving someone who doesn't love you back costs you a lot of effort, time and most of all, the love that you gave to that person.

you better let go.....It happens to me its not easy but we have to do it not for other person but for our self...