If you love someone, that’s great.
If that person didn’t love you back, even better.
Let them go, set yourself free from them and enjoy your life 100%.
May be someday the person who truly loves you will be with you.
If you think you can’t live without them,
Then go and get them.
Keep trying, never give up. Probably you will have them.
If not, then after death, at least you can say, I tried.