"I wonder if it's making a comeback because people are beginning to perceive it as the right thing to do and a way to show a commitment."
Both teachers in Rotorua, the couple are spending their school holidays in Britain visiting Miss Williams' sister.
They were introduced through a mutual friend who was playing matchmaker.
Miss Williams said that as a child she thought she would get married by the time she was about 21, but when she reached that age she was "definitely not ready or even thinking about it and wanted to travel" so didn't think it would happen until closer to 30.
"Then at 25 and single, before meeting Liam, I thought I would never get married. But with Liam just felt right and I knew I was ready.
"Liam was more about meeting the right person and letting it happen when the time was right.
"I feel like I've grown up and [am] ready to start the next chapter and know I can be married and still have friends and fun with nothing changing."