Love, Cholera, way too complicated

I have always believed that every person carries a story on his shoulders.
It could be ofcourse a dull one and it could be very interesting, sad, unique, common....
Whatever it might be it is one's story, very personal and mostly private.
Now i really wonder how could a person consider another the love of his life while for the other he is not more than a shadow?
Could one ignore the feelings of another even if they were very intense?
Could a person stay faithful to another-even if only in feelings- while the other goes on with his life?
For how long can you stay in love with the person considering you a shadow?
One year? Two? Fifty?
Assuming you stay faithful and in love for all this time, and assuming this person will love you back at the end and I really mean the end while you only have few years, maybe months and days to live would you still be happy? Was it worth it?
Could you forgive this person for denying you his/her love all this time...
All this is possible i guess it's one story amongst million of weird ones.
Not bad weird just too not common...and very complicated. But this is the way relationships are never easy..
To hell with him/her who don't love you back..Life is not worth the trouble and certainly no one is.
Every moment is precious so enjoy it people and don't waste it on broken hearts or hopeless cases.
But again this is me, the way i see things, my story, for others the few years are so precious that they hang on to this hope...
Yes every one sees it differently i guess...and who am i to lecture anyone...yalla whatever as long as you enjoy.