Pretty sure any couple can get into a fight at some point, and sometimes so bad they would be on the verge of breaking up. What happens later depends entirely on how they behave though.
She must have found his porn. Remember Naruto, Hinata's always watching you. And you shouldn't even need porn when you've got her for a wife.
The day they let go their child's handThe day the two met for the first timeThe day they got marriedA flood of tears, those were the happy daysThe day they wished to break up The day they held a babyThe day they found love