Is Love a Scientific Problem That Can Be Solved?

The question that started everything

I was listening to a podcast recently, one of those long, meandering conversations where the guest says something that makes you pause the episode and stare at the wall for a minute.

The guest was an AI researcher from Google. And somewhere between discussing machine learning and the future of human interaction, they posed a question that cut right through the noise:

“Is love a scientific problem that can be solved?”

What science CAN tell us about love

Let’s start with the genuinely remarkable things researchers have discovered. Love isn’t as mysterious as poets would have you believe, at least, not entirely.

Helen Fisher’s three systems

Biological anthropologist Helen Fisher spent decades studying romantic love. In a 1998 paper she proposed that mating in mammals, humans included, runs on three related emotion systems:

1. Lust: the sex drive, which Fisher associated mainly with oestrogens and androgens such as testosterone. The craving for sexual gratification, not directed at anyone in particular.
2. Attraction: which she associated mainly with dopamine and noradrenaline. Focused attention on one person, exhilaration, and that overwhelming, can’t-stop-thinking-about-them phase. The “falling” part of falling in love.
3. Attachment: which she associated mainly with oxytocin and vasopressin. The calm and comfort of a long-term bond. The “staying” part.

This is a model, drawn largely from research on other mammals, and later reviewers consider the tidy one-chemical-per-system mapping out of date. The brain-scan evidence is also narrower than the popular version suggests. In one 2005 study, 17 people who were intensely in love looked at a photo of their partner while in an fMRI scanner, and reward-related areas of the brain were more active than when they looked at a photo of an acquaintance (Aron, Fisher and colleagues).

Fisher argued that in humans the three systems became increasingly independent of one another, which is how a person can feel deep attachment to one partner and intense attraction to someone else. On her account that isn’t a moral failure. It’s how the systems are built. Understanding this doesn’t solve love, but it does explain a lot of the confusion.

Gottman’s magic ratio

John Gottman has spent decades watching couples talk through disagreements and following what became of them. The best-known number from that work is a ratio: during conflict discussions, the couples whose marriages lasted showed roughly five times as much positive as negative emotion.

The “magic ratio” is roughly 5:1. It describes what stable couples looked like during conflict in Gottman and Levenson’s 1992 study of 73 married couples. It is not a target and not a guarantee. The Gottman Institute itself calls a lower ratio one of many potential indicators of divorce, not the one thing that decides it.

You may have read that Gottman can predict divorce with more than 90% accuracy. Figures like that (about 94% in one 1992 study of 52 couples) come from models fitted to couples whose outcomes were already known, and Heyman and Slep showed in 2001 that accuracy drops sharply when such equations are tested on new couples. The practical point survives without the headline number: you can learn to add warmth and to cut back on the four corrosive patterns Gottman named the “Four Horsemen” (criticism, contempt, defensiveness and stonewalling).

Attachment theory: the predictor

Developed by John Bowlby and later applied to adult relationships by Hazan and Shaver, attachment theory is probably the single most useful framework for understanding dating patterns.

Your attachment style is usually described as secure, anxious or avoidant, with a fourth, fearful pattern added by later researchers (Hazan and Shaver’s 1987 study used three categories; Bartholomew and Horowitz proposed four in 1991). Researchers now treat these as tendencies you have more or less of, not fixed types. They are linked to how people behave in relationships, what sets off their insecurities and how they handle conflict: a 2012 review of 73 studies found that higher attachment anxiety and higher avoidance both went with lower relationship quality (Li and Chan). It’s not destiny, and it’s not a diagnosis.

If you’ve never explored your attachment style, the Confidence Hub’s Learning Hub has a module on it. It might be the most useful 15 minutes you’ve spent on your dating life.

The neuroscience of bonding

Oxytocin is often called the “love hormone” or the bonding hormone, which is a massive oversimplification. The strongest evidence for its role in bonding comes from other mammals, and even there it is under revision. In people the picture is unsettled: the best-known finding, that a sniff of oxytocin makes people more trusting, did not hold up when it was repeated (Nave, Camerer and McCullough, 2015; Declerck and colleagues, 2020), and levels measured in blood or saliva are a poor guide to what is happening in the brain. Fisher’s model gives vasopressin a similar bonding role, again largely on the strength of animal research.

So when you feel “connected” to someone, something real is happening in your body and brain. Science just can’t yet hand you a tidy chemical recipe for it.

What science CAN’T tell us

Why this person?

Science can explain what happens when you fall in love. It cannot explain why you fall in love with this specific person and not the equally attractive, equally compatible person sitting next to them at the bar.

There’s something about the particular combination of voice, humour, timing, shared experience, and sheer ineffable fit that no algorithm has captured and possibly never will. Researchers have tried. In two speed-dating studies, a machine-learning model was given more than 100 self-reported traits and preferences for each person and still could not predict which particular pairs would want each other (Joel, Eastwick and Finkel, 2017).

The role of timing and luck

You could be the most emotionally intelligent, securely attached, self-aware dater in the world, and still not meet the right person for years. Or you could meet them tomorrow, by accident, in a place you almost didn’t go.

Luck isn’t a satisfying scientific variable. But it’s an honest one.

The paradox of choice

Barry Schwartz’s 2004 book The Paradox of Choice argues that more options can leave us less satisfied with what we pick, more prone to second-guessing and more likely to compare. The evidence is mixed: a 2010 review of 50 experiments found an average effect of close to zero, with choice overload turning up in some settings and not in others (Scheibehenne, Greifeneder and Todd). Dating may be one of the settings where it does. In one experiment, online daters who chose from 24 profiles were less satisfied with their pick a week later than those who chose from six (D’Angelo and Toma, 2017).

Dating apps have given us more “options” than any generation before us, and more choice has not obviously produced more love. Science can describe the problem, but it can’t fix it, because the fix isn’t more information. It’s a change in how we approach the search.

The “clicking” phenomenon

Sometimes two people just click. Researchers have studied pieces of this. Taking turns at increasingly personal disclosure makes strangers feel closer (Aron and colleagues, 1997), and shared humour and falling into step with each other’s body language are often suggested as ingredients too. None of these fully explains it. In the speed-dating studies above, the part of attraction that belonged to a specific pair, over and above how keen or how sought-after each person was in general, was exactly the part nobody could predict. That residue in human connection may simply be irreducible.

And honestly? That might be a feature, not a bug.

So what CAN we do with the science?

This is the question that matters. If love can’t be “solved” but parts of it can be understood, what’s the practical value?

Build better foundations. Confidence, self-awareness, and emotional regulation aren’t romantic, but they’re the foundation everything else is built on. The Confidence Hub exists because we think people who understand themselves date better.

Ask better questions. Most first conversations are shallow because nobody asks the right questions. The entire First Dates experience is built on question design informed by psychological research on disclosure, vulnerability, and connection-building.

Recognise patterns earlier. Your attachment style, your conflict triggers, your tendency to self-sabotage: these aren’t random. They’re patterns. And patterns can be spotted, understood, and (with effort) changed. This is what Sparky coaching is built for.

Protect against known failure modes. Red flags, toxic dynamics, Gottman’s Four Horsemen: researchers have described many of the common ways relationships go wrong. You can learn to spot them early, before you’re emotionally invested.

The Dive Deep Dating philosophy

We don’t claim to solve love. That would be arrogant and wrong.

What we do is draw on published research (Gottman, Bowlby, Fisher, Fredrickson, attachment theory, behavioural psychology) and apply it to the parts of dating that can genuinely be improved. Confidence. Communication. Compatibility assessment. Self-awareness. Safety.

And then we create space for the parts that can’t be explained. The parts that make you laugh for no reason. The parts that make you feel, somehow, that you’ve known this person longer than you have.

Science gives you a better starting position. The magic (the real, unexplainable, beautiful magic) is still up to you.

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This article is part of “The Big Questions” series, exploring the deepest questions about love, dating, and human connection through the lens of real research.