I guess if I do have any advice, it would be to keep in mind that to love is not to own. Mencinta tak bermaksud memiliki, gituuu. I think it's always a good idea to ask yourself whether or not you need this person to love you back for it to be real.
If you still are able to love that person, even when that person doesn't love you back, then that's the kind of love that I find admirable.
I find it admirable when a person only wants what is best for the other person, no matter if he is with that other person or not.