I can confirm this. It has been 15 years since my son died.

On a day-to-day basis there is a new normality in my life and the emotion surrounding his loss is locked tightly in a box. There is plenty of happiness and plenty of new happiness in my life.

However, at all of the happiest moments in my life the box is opened and I am reminded that we are missing the one thing that would make this moment complete.

This is why old people cry at weddings.