I think its all normal for bickering and for it to increase. It seems like it becomes an easy shorthand for real communication. Like having email, IM and and all that abreviated contact among people that is misinterpreted so easily. We need time sometimes to just communicate at a human speed , not breif and "electronic" and shorthand like marriages contain. One time I decided to think what would I put in a letter if it was back 2 hundred years ago and would not reach him for 3 months to travel across a continent and his reply would not come for 3 months. After 25 years of married communication I had to wonder if a lack of instant resonse options in the old days kept some couples closer. Waiting for the loving words and also having time to reconsider hurtful words.
So now I'm trying to slow down my mouth too. There have been times I thought to get out and even "threatened" , and times he's said go ahead if youre going. But its the both of us creating how it goes and what we say we'll invest and live up to.