"Then, I won't say no if you really want to help with this stinky task." He gives his son's toes a playful squeeze and wiggle to make him laugh before he gets to the task at hand.

"Phew!" He makes exaggerated faces at Alex as he unties the nappy to replace it with a clean cloth. "What are we feeding you two?" It's easier to pretend he doesn't feel empty inside when playing with his kids.