Dillon (28), a former Black Stick and Carter's girlfriend of eight years, accepted his proposal, and likely dashed the hopes of adoring women across the globe.
On his Facebook fan page, Carter, also 28, yesterday said the couple had not made any wedding plans yet.
"Thought I'd let u know I asked my long term girlfriend Honor to marry me & she said yes.
"We are very happy & looking forward to spending our future together," he wrote.
Carter's proud father, Neville Carter, told the Weekend Herald his son had spun a story of having to go down south for the weekend to shoot some advertisements and that he had been offered a free helicopter ride. He was not sure if Dillon had an inkling beforehand of what was coming.
Carter organised for both sets of parents to fly down to Queenstown before the proposal, and then they all went out for a meal together on Saturday night.
"He had everything organised. Everything was spot on," Neville Carter said.
"All I know is that she said yes, and he was pretty happy. It's great - it's something we have always been looking forward to. But I suppose with rugby it's a case of fitting it in really."
Carter seemed pretty relaxed before proposing.
"They have been going together for eight years.
"Surely they must have discussed it at some stage."
There had been no talk yet of when the wedding would be held.
"I daresay it will be a year or so. I'm just guessing."
Neville Carter joked there would be thousands of women disappointed his son was off the market.
"Some of them will be gutted. They'll have to build a bridge and get over it. There's still Richard Kahui and Richie McCaw, so they have still got things to work on."
Carter and Dillon met through university friends in 2000 and started dating a couple of years later. They now split their time between Auckland and Christchurch.
Carter has recently undergone ankle surgery but is expected to be fit for the end-of-year northern hemisphere tour.
Sara Tetro, from 62 Models, who is an agent for both Dillon and Carter, was happy for the pair.
"They've been together for a long time, and they're very happy just being engaged for the time being," she said.
"It's great news."
She said the couple wanted to keep the details of the engagement private.
- Jarrod Booker
Additional reporting: Paul Harper
