Neanderthal Kissing: A Brief History of Questionable Romantic Decisions
19th November 2025
It is comforting to know that bad romantic decisions are not a modern invention.
Long before dating apps, long before lounge bars and awkward small talk, early humans appear to have looked across at their robust, heavy-browed Neanderthal neighbours and thought:
“…yes. That.”
We know this because genetics doesn’t lie. And unfortunately for us, genetics also doesn’t forget. Modern humans today carry Neanderthal DNA, which means that at some point, probably more than once, someone leaned in and kissed someone with a skull like a crash helmet.
Let us consider why.
- The biological explanation: “Does your breath smell compatible?”
Scientists suggest that kissing originally evolved as a way to detect chemical compatibility. A sort of pheromonal background check.
So perhaps early humans thought:
“Your immune system complements mine… and your jaw could probably open walnuts… but somehow this works.”
Languages do this too.
They sniff each other’s grammar from across the valley and decide whether to swap vocabulary. Not romantic, but strangely similar.
- The social explanation: awkward neighbour relations
Homo sapiens and Neanderthals shared Europe for thousands of years. If you share a landscape, and possibly a cave entrance, long enough, certain things happen:
You swap tools.
You swap fire.
You swap, apparently, saliva.
It may simply have been the prehistoric version of getting on with the neighbours.
- The curiosity explanation: “What’s the worst that could happen?”
Curiosity has always been humanity’s greatest strength, and its greatest liability. It made us cross oceans, climb mountains, discover fire, and apparently kiss someone from an entirely different species.
To be fair, it is the same curiosity that makes us learn new languages, attempt to pronounce unfamiliar vowels and ask translators impossible questions like
“How different can ‘similar’ actually be?”
Curiosity drives connection – even the messy, experimental kind.
What this ancient romantic chaos teaches us
Humanity has never been a closed system. We are a compilation of encounters, experiments, mistakes and moments of boldness.
Language, too, is shaped by contact, by curiosity, by the willingness to get close enough to truly understand (ideally without interbreeding).
At Foreign Tongues, we honour the curious spirit that made our ancestors kiss the neighbours. We simply apply it in more appropriate, less genetically complicated ways:
through translation, cultural insight and the delicate art of decoding one species of English into another.
Because communication, prehistoric or modern, is always a leap into the unknown.
