I admit, I'm squeamish about a few things. There are boundaries
to what I can tahan. We're 6 months old and we can do most of the
listed items in front of each other.
All except pooping and farting. Pooping is strictly behind closed
doors, and the room becomes a no-entry zone e.g. if the business is
done in kitchen toilet, the other person auto-avoid the kitchen too

This has to do with the mentality of "your poop is smellier than
mine!"
Same goes with farting - "your fart is smellier than mine!" We
avoid farting in the same room
But I've sneaked a
fart or two under the covers with him none the wiser.
Which
proves that mine is not that smelly, right??? 
But all others, we're ok heheheh. Admittedly, he is probably more
tolerant than I am hahaha (But as above, that's cos his is smellier
)
I've pondered about ShrodingersCat's point about looking after each
other's bodily functions before. Would we have problems cleaning up
after each other? I think this is one of those bo bian things,
activities that you will adapt and carry out with good grace
because there is really no other choice under the circumstance. One
does it out of love and duty. Just like how a person gets grossed
out by baby's puke, yet when he/she is a parent, cares for the baby
without complaint, and wears the sour milk scent around him/her
nonchalantly like perfume.