I can't really answer that piggynose,we just seem to have arrived here.
I do know we still make each other laugh (usually at the wrong things!0
We almost know what the other is thinking by now.
We never row,we may have tiffs,but one of us always apologises (usually me!)
When we have a disagreement she say she will go home to Mother,well that's not difficult,MIL's ashes are stiill in the dining room.
We are not morbid,we just haven't been able to scatter her (in Germany) where she wanted,yet! I could ask one of the kids to do it,but Elsie is adamant that she want's to be there.
I remember this saying that my dear and loved MIL told me,for husbands to learn:~
"Whenver you are wrong admit it,
and whenever you are right,shut up!"
It's got me a long way.