Checking whether or not the the other one smells.
And making sure there's nothing in their nose.
Searching each other's bodies for spots, blackheads, or ingrown hairs.
Turning farting into a competitive sport.
Pulling out weird long hairs that grow in odd places.
And updating each other on your successes and failures in the toilet.
Sharing a toothbrush on holiday because one of you forgot to pack yours.
Having a nice chat while one of you is weeing.
And no matter how gross they are, still thinking they’re the most beautiful person on the planet.