It's a tough question. Though my heart is hurted but i'll just keep it unspeakable and just wish him would knew my heart. Love doesnt have to be together

if you love someone yet that person does not love you in return, it is best not to follow through with that person, you should find another women/man becauses if you try to express your love to this person, you might risk jeperdizing(messing up) set person's relationship with the person he/she loves

Forget her/him, starting a new life by yourself

I agree with Moni as painful as that may seem. Don't ruin someone else's life through your unrequited love.

Let her be. If you really love that person, you'll understand her situations. Be fair with her and give her a break! You don't know, maybe in the future, she'll realize that you're really the one that should have been loved by her.