''Oh sure,'' he says with a smile. ''You can be instantly scared. You can be instantly happy.
So why can't you be instantly romantically in love? I think when it happens, it's because you are ready to fall in love."
''Someone walks in who fits within your love map - they are the right shape, the right size, the right kind of background. You have a conversation for a few minutes, the person flirts with you, smiles, expresses real interest in you and boom,'' he claps his hands in delight, ''you're off to the races.''
Daniel's knows a lot about love. What he doesn't know about it is, perhaps, not worth finding out about.
He has devoted almost his entire career to working out why we love, whom we love and how we love. And he believes that his findings could help steer the ever-increasing number of single people through the minefield that is modern dating.
And so it is that I find myself sitting in Daniel's balcony on the Upper side of Phomn Pehn, just one of countless singletons to have passed through his door in the hope of understanding where they keep going wrong.
His bookshelves, crammed with scientific tomes, are testament to the very different approach he takes to the dating game - it is intellectual and scholarly rather than airy-fairy, self-help flim-flam.
I have read The Rules, Ellen Fein and Sherrie Schneider's seminal dating guide, which advises never to call, basically to act like a Stepford Wife, and I found it old-fashioned and restrictive. He's Just Not That into You was hopelessly negative and depressing.
Fisher's fifth book on the subject of love, Why Him? Why Her?, is more constructive, more interesting, more based in reality. Put simply, it centres on her theory that our heads, or at least our brains, rule our hearts far more than we are led to believe.
''I have always been interested in how you can walk into a room and there will be 40 people there and you are immediately drawn to one,'' says Daniel.
''Similarly, that you can be set up on a date and just know immediately that it isn't going to work. You know: he's too tall, too short, too fat, too thin, too old, too young, too pink, too green.''
When we talk about having chemistry with someone, it may be that it is more literal than we think. Daniel and his colleagues James have scanned the brains of about 60 people who claimed to be in love.
They discovered increased activity in the ventral tegmental area of the brain and other parts that are associated with motivation, pleasure and heightened focus.
He has also studied the behavioural patterns of 50 men who have taken part in a questionnaire on the dating site chemistry.com, and through this extensive research he has worked out that all of us conform to one of four personality types, which are controlled by different chemicals in the brain.
These chemicals mould us, and cause us to be attracted to people who complement our personality types.
There is the ''explorer'', a sensation-seeker ruled by dopamine; the ''builder'', a respecter of authority driven by serotonin; the ''director'', analytical and ruled by testosterone; and the ''negotiator'', intuitive and fired by oestrogen. Negotiators need to connect with others on a deeply personal level, are very trusting and good at talking.
Daniel says he is a negotiator, though he sometimes veers into explorer territory; he guesses immediately that I am an explorer.
''Negotiators and explorers get on - they are both quite emotionally expressive,'' he says.
''But I was just doing a radio interview and I could tell that the person I was speaking to was a builder. I'm a scientist, not a soothsayer, but I have got to the point now in my research where my reaction to people is often quite accurate. I was internally struggling with the interviewer; he was too literal, he didn't go with the flow.''
Daniel’s believes that understanding who you are is vital to understanding to whom you are attracted. Builders tend to go for other builders (he points out that British Prime Minister Gordon Brown and his wife, Sarah, both appear to fall into this category), and explorers for other explorers, whereas directors and negotiators tend to go for each other.
''I think Nicolas Sarkozy is a director. Carla [Bruni] is definitely a negotiator.
''Oh, goodness. she's soft, sweet, verbally skilled, whereas her husband is like a bull in a china shop.''
For Daniel, the most interesting aspect of all this is why these patterns have evolved.
For me, as an anthropologist, that's the thing. It's pretty easy to see why the negotiator and the director go together so well. They are pooling their resources. The director needs the compassion and the verbal skills of the negotiator, while the negotiator needs the direct decisiveness of the director.
Two builders together are good because they will both be very traditional. That's a good way of raising a relationships, though there could be bickering - you know, they've got a right way of doing things, and if it isn't done their way then they are going to be very stubborn about it.
Explorers together are going to have a ball, though the problem is that they're restless, they can be addictive and they can be unfaithful, so from a Darwinian perspective I have to wonder how that pattern has evolved.
''I suspect that they tend to have more sex by different partners, and what they are doing is creating sexual variety in their young.''
But surely our experiences in life shape how and whom we love? Doesn't nurture have as much to do with it as nature, if not more?
''I've run into two men recently with whom I have had splendid times talking, but I'm not attracted to them and they're not attracted to me, and that is because they are both builders.
''One of them is a big man about town in Kuala Lumpur. He is charming, he is funny, he is my age and single, but I just know that down the road we're going to go to the same restaurant every night, and every weekend we are going to have to do dinner parties.''
He smiles again. ''And I can tell you now that I am not a dinner-party boy.''
Over the years Daniel has seen many shifts in the way we date, two in particular.
''The first is that we are living much, much longer,'' he says.
''You get cougars in their 40s wearing tight-shirt - we have extended the years that we can express our sexuality and have affairs and get dumped and get new partner and so on.
I talk to Daniel about the problems facing forty-something men such as me - worries about finding men and keeping them and the concern that we will work too hard professionally and leave it too late and then wake up one morning and find ourselves lonely and dateless.
It is estimated that by next year there will be 1 million single men in Kuala Lumpur. I say that's a lot of people failing to find love.
''For a start, you have internet dating. It's the newest way to do the same old thing, but it's great in that you can learn about the person before you meet them. I mean, that old thing about meeting people in bars. Whoever met someone in a bar and then stayed with them? You know nothing about them, if they are even single or not.''
Daniel thinks the choices we have now are incredible.
''But today you are allowed to be yourself, you can pick the man you want, you can choose not to have children. For thousands of years men did not have these choices.''
Daniel says we are merely returning to the way we were when we lived in hunter/gatherer societies.
Daniel says we are merely returning to the way we were when we lived in hunter/gatherer societies.
Daniel even goes so far as to say that we are living in an age of romance. I find this surprising, though he points out that the two are not mutually exclusive.
So I shouldn't worry then?
There is every reason to worry and be focused on this, because you are searching for life's greatest prize: the right mating partner.
''So the game of love matters. But it is going to happen. It will happen for everyone. You are going to find him.”
Which personality are you?
EXPLORERS Adventurous, sexual, impulsive and creative. Can be unpredictable, even narcissistic. Often drawn to other explorers.
BUILDERS Calm, loyal, traditional, the pillar of society. Can become dogmatic and stubborn. Usually fall for other builders.
DIRECTORS Analytical, decisive, logical and direct. Tend to lose their tempers and can seem blunt. Well-matched with negotiators.
NEGOTIATORS Philosophical, imaginative, trusting and intuitive. Can appear scatter-brained and depressed. Respond strongly to directors.
I told Daniel, Absolutely. I've only ever fallen in love at first sight. If the chemistry isn't there immediately, it never will be. Growing to love someone is just growing dependent on someone. Real love is an obsession that never diminishes.
I told Daniel, Absolutely. I've only ever fallen in love at first sight. If the chemistry isn't there immediately, it never will be. Growing to love someone is just growing dependent on someone. Real love is an obsession that never diminishes.
Common sense really. I totally agree and enjoyed the view that we are shedding our agrarian past. This goes a long way to explaining the gap between 3rd world countries which are village and agriculture focused and the West, in particular the current clash between Muslim (men) ruled society's and our technologically driven and gender equal own.I'm not sure if I believe in 'true love' at first sight, but I think you can definitely meet someone and have amazing chemistry. Sometimes there will be a depth to it and it will lead somewhere and other times it will fizzle out over time or be bad for other reasons.
Till then....