Arguing can be good for you, say Auckland couples therapists Nic Beets and Verity Thom.
The couple, who've been together for 36 years, say too many Kiwi couples are "conflict-avoidant", staying away from issues on which they disagree.
"You can tell the old married couple in the restaurant -- they're not talking," Mr Beets said.
"It's not because they have said everything. It's because everything is dangerous, everything is a minefield, there's nothing safe to talk about.
"That's the logical outcome if you pursue closeness, you'll end up emotionally distant."