Most Helpful Guy
No you shouldn't put in the effort, Unrequited love, ultimately that's just going to cause a lot of pain for you. Be careful even if he decides to change, do not wait there just to see what will happen, because possibly the person won't change the way you want them to, or in the time you want them to.
Most Helpful Girl
If they know how you feel, yet show no feelings back like you do... it could be they will in time... it's just a matter of how long are you willing to wait around to see if they do. I suggest giving it a little more time, but then moving on.