Getting over someone is never easy, whether it's someone you can't date for various reasons or someone who simply doesn't share your feelings. Unrequited love can be very painful and unfortunately there are no easy, clear-cut answers to the question 'how do you forget about someone?'. Even so, there are a few things that can be helpful even though the process itself can be a difficult one:
It might seem basic, however, acknowledging and accepting your feelings is one of the most important steps for moving on. Denying your feelings or trying to minimize them in any will only make matters worse and will end up stalling your recovery, making it even harder to let go. Allow yourself time to 'grieve' and be upset, just as you would when recovering from a breakup. While it might not technically be a breakup, the feelings of loss you're experiencing is quite similar to the process of going through a tough breakup.