Why do we feel sad when we lose the one we love?

Mamba

Because we had been so infatuated with each other and we shared lots of sweet memories.But heartbreakingly,we couldn't be with each other any more. The separation is the last thing for anyone who's immersed in the love moisture to imagine.So if you don't have any feeling,it just proves you didn't actually fall in love and gave your heart to him or her.