When Color Meets Life

In a world where everything is black and white, no color, no differences between one thing and another, darkness. There is light and color but just with the physic contact with the one you truly love. The sea will become the sky, the clouds will become stones, the darkness becomes color everything it's finally perfect. But there is a price for love and happiness, death. You will be born and loved but you will only age until 18, once you are 18 you are not going to age another single day, but when you meet the person you truly love and it's meant to you, you will age. You will age together and die. But there are also people that want the in mortality and don't want to love or be loved. There are going to be people that are together for a long time but never age because they still can't see colors, that means they are not meant to be.
So what would you do? Live for ever or die for love?