'Fundamental to who we are': The TV moment that captures what it means to be a sister

Much has been said, gushed over and memed about the chemistry between Adam Brody and Kristen Bell's characters in the Netflix rom com Nobody Wants This.

And for those of us who were deep in our late, angsty teens during the early noughties, the coming together of Seth Cohen and Veronica Mars feels like a nostalgic fever dream.

Brody's enormous leap from awkward, silver-spooned teenager on The OC to charismatic, hot rabbi has caught many off-guard… in a good way.

And then there's "the kiss"; the scene that triggered a lot of, erm, feelings – and left even the happiest couples questioning the spark in their love lives.

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But as much as I enjoyed the dynamic between Bell and Brody, it was another relationship in the series that really grabbed me by the heart; sisters Joanne and Morgan.

During a scene in a thrift shop, the sisters are nonchalantly flicking through racks of clothes when one of them flippantly declares that she hates Anne Hathaway.

As if struck in the stomach with a bowling ball, the other sister looks up and announces that she too can't stand the Hollywood actor.

As inconsequential as that moment may seem, I'm not going out on a limb when I say it speaks directly to what it means to have a sister.

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A shared and passionate dislike for someone you've never met could be viewed as irrational or petty… but in the exchange between J and M, you can see it triggers something that exists at their core, a foundational feeling that they may not be able to explain, but they cannot fight it.

This shared feeling at the core of sisters is not exclusive to thoughts on other people. In my experience it can relate to Vegemite, dresses with midriff cut-outs or netted ballet flats.

And while the sensible side of you knows you should probably challenge these feelings, the safe space provided by a sister allows you really, truly feel it with no guilt attached.

It doesn't makes sense, but this is the joy of having a sister – there is someone in your life who will always accept the worst, most impulsive version of yourself, sometimes even indulge it.

Don't get me wrong, my sister also brings out the best in me and, as an exceptionally good and thoughtful human, also sets a high standard. But sometimes you've just got to let the wrong thoughts run free and get them off your chest, and that's what sisters are for.

They can also read your mind, like when Morgan declares Joanne has developed "the ick" before Joanne has even recognised it in herself.

And then, without issuing any spoilers, there's a fight. Not a physical brawl – worse. A war of mud slinging and nasty name calling with a bit of silent treatment thrown in for good measure.

Not all sisterly disagreements descend into the above behaviour, but what's universal is the clear desperation for any argument to be over.

When inevitable disagreements arise from time to time, fear and despair set in as you contemplate the loss of a limb, a funny bone and a life raft all at once. It just can't go on.

As the nasty barbs escalate between Joanne and Morgan, you can detect an element of regret with each insult. They can't be outdone or beaten in the fight, but it simultaneously pains them to cause such hurt to the person who's always provided comfort.

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The writing captures the dynamics between sisters so accurately that it could only be crafted by someone with lived sisterly experience – and, sure enough, that is the case.

As the creator Erin Foster has proven, some things about sisters simply can't and shouldn't be explained. But they are also fundamental to who we are.

Now, if you'll excuse me I need to urgently call my sister to vent about Mom Jeans.

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