What should i do if i love someone but can't be with that person?

Why is life not fair you care about someone so much but you can't be with them. Its like whats the point of living if you can't be with the person you love and the worst part about it is you lose your virginity to them. Also, they are your brother homeboy but does it really matter because if you care bout that person so much why would you care if they are your brother friend. Its so hard to forget bout the person because you see them everyday. You will never change anything bout them because they are good just the way they are. You think bout them everday and they are always on your mind. But what the point if they dont feel the same way bout you because they have some one new in their life. So i say it again life isn't fair when you can't be with the person you care bout.