So let's revisit the good times.
Like the time Katy found the ceiling more enthralling that whatever was being whispered into her ear.
Image by Christopher Polk / Getty Images
The time Katy had to pick some dandruff out of John's hair.
Image by John Moore / Getty Images
The time they both made faces like this.
Source: Alo Ceballos / FilmMagic
Their Halloween costumes.
Source: Mark Hunter/The Cobra Snake
