Yes they should coz they don't have any other option. Its life n we can't hold the past n old memories for long we have to move on in life.. I just have to say these words to all. "My friend never feel sad on losing someone in your life whenever a tree looses its leaf a new leaf is ready to take its place" So be strong, be positive, be hopeful, be happy its the only option we have.
Sajidoo