The truth is they never agree.
One prefers Gone With the Wind, the other thinks Star Wars is the best movie ever made. One likes plain milk, the other likes it chocolate or not at all. One says cats are better pets, the other insists that dogs are better companions.
They don't agree on anything, from clothes to makeup to food to who should be on top tonight and whether one should be allowed to tie the other to the bed again.
But the truth is it doesn't matter, because they actually do agree on one thing, and that's that their love is real and important and special. And that overrides everything else.