In any sense... Bickering, sniping, full blown arguements?
Dh & I have had less than a handful of full blown arguments in 12yrs together, all of which have been since we've had dc (eldest is 7). They're usually fuelled by stress/tiredness. But...
We bicker a lot more. I don't think a day goes by without us back chatting to each other. It might be a pa comment about something the other one has said or done, or telling the other to shut up etc.
On their own they're a none issue, but as a common occurance they're starting to grate.
It happens both ways so it's not all dh.
It's like the politeness/restraint you have when with friends has disappeared with us... The relationship is very similar to the one I had with my sister as a teenager.