beta
The second I heard five years, no fighting, my thought was "She gave up putting up with him." Just like the guy said she didn't remember he didn't like pork, he likely did much of the same before then. My mom has gotten very tired about all the little things my dad doesn't notice, both that she does and he doesn't notice he does.
As for the anniversary thing, it depends on how the person is with dates in general. My dad and I are great with remembering birthdays and the like while every so often when my mom fills out a form, she has to ask the day of the month I am born on.
Our couple doesn't have that problem. I wouldn't say they are fighting every day so much as they are communicating.