Every day he has the perfect answer.

At 93 and 94 respectively the pair have perfected the art of marriage, recently celebrating their 75th anniversary.

To mark their matrimonial diamond jubilee they received a letter from the Prime Minister and even Queen Elizabeth II herself.

Mr Pretty said that a daily ritual the pair have had their entire marriage was still alive and well today.

"Every day she asks me, 'how much do you love me?' and I have to stretch my arms out as far as I can and say 'this much'," he said.

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One day, Mr Pretty asked her what happens if he gets tired of their daily ritual.

"He said 'I'll get sick of it' and I told him you'll definitely be sick of it by the time you're finished," Mrs Pretty said.

Their secret to a long and happy relationship is a healthy, simple life of mutual love.

"We never eat any rubbish, we've always lived on good food," Mr Pretty said.

"Exercise and plenty of fruit and vegetables.

"Just have a simple life and be loving."

More than seven decades into their partnership, the pair still love each other.

"It doesn't take much to have a good relationship, you make life as you find it," Mrs Pretty said.

"We're very fond of each other."

Currently Mrs Pretty resides in the 24-hour care unit at Westmont Aged Care, with her husband just a quick walk up the road.

"She goes crook on me because she lives in here and I'm down the street, she thinks we're living in sin," Mr Pretty said.

The happy couple have done many things over the course of their lives with Mr Pretty working as a barber for many years and Mrs Pretty at a jewelry store for 25 years.

"You have a lot of happy memories as you lie here from day-to-day and you think of all the beautiful moments," Mrs Pretty said.