One may fall in love with many people during the lifetime. When you finally get your own happiness, you will understand the previous sadness is kind of treasure, which makes you better to hold and cherishthe people you love.
When you are young, you may want several love experiences. But as time goes on, you will realize that if you really love someone, the whole life will not be enough. You need time to know, to forgive and to love. All this needs a very big mind.
When tomorrow turns in today, yesterday, and someday that no more important in your memory, we suddenly realize that we are pushed forward by time. This is not a train in still in which you may feel forward when another train goes by. It is the truth that we've all grown up. And we become different.