Table Of ContentAnatomy
of
Love
A	Natural	History	of	Mating,	
Marriage,	and	Why	We	Stray
COMPLETELY	REVISED	AND	UPDATED
Helen	Fisher,	PhD
W.	W.	Norton	&	Company
Independent	Publishers	Since	1923
New	York	•	London
FOR	LOVERS	EVERYWHERE
And	in	memory	of	Ray	Carroll
CONTENTS
Prologue
Here’s	to	Love!
1.	Games	People	Play
Courting
2.	Why	Him?	Why	Her?
The	Drive	to	Love	and	Who	We	Choose
3.	Is	Monogamy	Natural?
Of	Human	Bonding	.	.	.	and	Cheating
4.	Why	Adultery?
The	Nature	of	Philandering
5.	Blueprint	for	Divorce
The	Three-to	Four-Year	Itch
6.	“When	Wild	in	Woods	the	Noble	Savage	Ran”
Life	in	the	Trees
7.	Out	of	Eden
On	the	Origin	of	Monogamy	and	Desertion
8.	The	Tyranny	of	Love
Evolution	of	Attachment	and	Love	Addictions
9.	Dressed	to	Impress
Nature’s	Lures	for	Seduction
10.	Men	and	Women	Are	Like	Two	Feet:	They	Need	Each	Other	to	Get	Ahead
Gender	Differences	in	Mind
11.	Women,	Men,	and	Power
The	Nature	of	Sexual	Politics
12.	Almost	Human
Genesis	of	Kinship	and	the	Teenager
13.	The	First	Affluent	Society
“That	Short	but	Imperious	Word,	‘Ought’	”
14.	Fickle	Passion
Romance	in	Yesteryears
15.	“Till	Death	Us	Do	Part”
Birth	of	Sexual	Double	Standards
16.	Future	Sex
Slow	Love	and	Forward	to	the	Past
Appendices
Appendix	A
Appendix	B
Appendix	C
Acknowledgments
Notes
Bibliography
Index
PROLOGUE
Here’s	to	Love!
Journalist:	Why	do	you	only	write	about	relationships?
Nora	Ephron:Is	there	something	else?
I
	was	recently	traveling	in	the	highlands	of	New	Guinea	in	the	back	of	a	pickup
truck,	talking	with	a	man	who	had	three	wives.	I	asked	him	how	many	wives	he
would	like	to	have.	There	was	a	pause	as	he	rubbed	his	chin.	I	wondered:	Would
he	say	five?	Ten?	Twenty-five	wives?	He	leaned	toward	me	and	whispered:
None.
We	are	a	pair-bonding	species.	Some	85%	of	cultures	permit	a	man	to	have
several	wives,	but	few	men	actually	build	a	harem.	A	man	has	to	have	a	lot	of
goats,	cows,	land,	money,	or	other	impressive	resources	to	get	several	women	to
share	his	wedding	bed.	Even	then,	having	more	than	one	wife	can	be	a
toothache.	Co-wives	fight;	sometimes	they	even	poison	one	another’s	children.
We	are	built	to	rear	our	babies	as	a	team	of	two—with	a	lot	of	helpers	near	the
nest.
This	book	is	the	story	of	that	monumental	human	passion:	to	love.	As	well	as
all	of	the	spinoffs	of	our	basic	human	reproductive	strategy:	how	we	court;	who
we	choose;	how	we	bond;	why	some	are	adulterous	and	some	divorce;	how	the
drive	to	love	evolved;	why	we	have	teenagers	and	vast	networks	of	kin	to	rear
our	young;	why	a	man	can’t	be	more	like	a	woman	and	vice	versa;	how	sex	and
romance	drastically	altered	with	the	invention	of	the	plow;	and,	in	the	last
chapter,	a	new	look	at	future	sex.
When	W.	W.	Norton	invited	me	to	do	a	second	edition	of	this	book,	I	gaily
said	yes,	thinking	this	was	a	privilege	and	an	easy	job.	The	first	version	had
taken	me	ten	years	to	write;	I	thought	this	revision	might	take	ten	days.	Then	I
read	the	book—and	swiftly	realized	that	I	had	to	update	almost	all	of	it.
read	the	book—and	swiftly	realized	that	I	had	to	update	almost	all	of	it.
So	I	have	now	added	a	great	deal	of	data	and	ideas,	including	data	on	all	of
our	brain-scanning	experiments	on	romantic	love,	rejection	in	love,	and	long-
term	love;	my	new	data	on	the	biology	of	personality	and	why	you	fall	in	love
with	one	person	rather	than	another;	new	information	on	adultery,	love
addiction,	sexual	selection,	and	mate	choice;	the	newest	statistics	on	worldwide
patterns	of	divorce;	my	theory	on	the	development	of	morality	across	the	life
course;	my	hypothesis	about	our	modern	dating	habits—what	I	call	“slow	love,”;
and	a	wealth	of	new	data	on	future	sex,	collected	in	collaboration	with
1
Match.com. 	I	also	added	references	for	my	additions	(and	retained	most	of	the
original	references)	and	two	of	my	questionnaires	as	additional	appendices.
Journalist	David	Gergen	once	called	me	“America’s	last	optimist.”	There	is
much	to	cry	about,	but	there	is	also	much	to	celebrate—including	our
inexhaustible	human	drive	to	love.	Technology	is	changing	how	we	court.	But	it
can’t	change	love.	Romantic	love	and	attachment	emanate	from	the	most
primitive	regions	of	the	brain,	near	those	that	orchestrate	thirst	and	hunger.	And
as	Plato	aptly	wrote	in	The	Symposium:	“The	God	of	love	lives	in	a	state	of
need.”	Love	is	a	need,	a	craving,	a	drive	to	seek	life’s	greatest	prize:	a	mating
partner.	We	are	born	to	love.	Indeed,	if	we	survive	as	a	species,	we	will	still	fall
in	love	and	form	pair-bonds	a	million	years	from	now.
This	book	traces	the	trajectory	of	this	indestructible	human	passion.	And	it
ends	on	a	high	note.	I	firmly	believe	that	if	there	ever	was	a	time	in	human
evolution	when	we	have	the	opportunity	to	make	happy	partnerships,	that	time	is
now.
Here’s	to	love,
Helen	Fisher
ANATOMY	OF	LOVE
1
Games	People	Play
Courting
Moved	by	the	force	of	love,
fragments	of	the	world	seek	out	one	another
so	that	a	world	may	be.
—PIERRE	TEILHARD	DE	CHARDIN
I
n	an	apocryphal	story,	a	colleague	once	turned	to	the	great	British	geneticist	J.
B.	S.	Haldane	and	said,	“Tell	me,	Mr.	Haldane,	knowing	what	you	do	about
nature,	what	can	you	tell	me	about	God?”	Haldane	replied,	“He	has	an	inordinate
fondness	for	beetles.”	Indeed,	the	world	contains	over	300,000	species	of
beetles.
I	would	add	that	“God”	loves	the	human	mating	game,	for	no	other	aspect	of
our	behavior	is	so	complex,	so	subtle,	or	so	pervasive.	And	although	these	sexual
strategies	differ	from	one	individual	to	the	next,	the	essential	choreography	of
human	courtship,	romance,	love,	and	marriage	has	myriad	designs	that	seem
etched	into	the	human	psyche,	the	product	of	time,	selection,	and	evolution.
They	begin	the	moment	men	and	women	get	within	courting	range—with	the
way	we	flirt.
Body	Talk
1
Irenäus	Eibl-Eibesfeldt,	a	German	ethologist, 	noticed	a	curious	pattern	to
women’s	flirting	behavior.	Eibl-Eibesfeldt	had	used	a	camera	with	a	secret	lens
so	that	when	he	directed	the	camera	straight	ahead,	he	was	actually	taking
pictures	to	the	side.	This	way	he	could	focus	on	local	sights	and	catch	on	film
the	unstaged	facial	expressions	of	people	near	him.	In	his	travels	to	Samoa,
Papua,	France,	Japan,	Africa,	and	Amazonia,	he	recorded	numerous	flirting
sequences.	Then,	back	in	his	laboratory	at	the	Max	Planck	Institute	for
Behavioral	Physiology,	near	Munich,	Germany,	he	carefully	examined	each
courting	episode,	frame	by	frame.
A	universal	pattern	of	female	flirting	emerged.	Women	from	places	as
different	as	the	jungles	of	Amazonia,	the	salons	of	Paris,	and	the	highlands	of
New	Guinea	apparently	flirt	with	the	same	sequence	of	expressions.
First,	the	woman	smiles	at	her	admirer	and	lifts	her	eyebrows	in	a	swift,	jerky
motion	as	she	opens	her	eyes	wide	to	gaze	at	him.	Then	she	drops	her	eyelids,
tilts	her	head	down	and	to	the	side,	and	looks	away.	Frequently	she	also	covers
her	face	with	her	hands,	giggling	nervously	as	she	retreats	behind	her	palms.
This	sequential	flirting	gesture	is	so	distinctive	that	Eibl-Eibesfeldt	is	convinced
it	is	innate,	a	human	female	courtship	ploy	that	evolved	eons	ago	to	signal	sexual
and/or	romantic	interest.
Other	gambits	people	use	may	also	come	from	our	primeval	past.	The	coy
look	is	a	gesture	in	which	a	woman	cocks	her	head	and	looks	up	shyly	at	her
suitor.	A	female	possum	does	this	too,	turning	toward	her	suitor,	cocking	her
snouty	jaw,	and	looking	straight	into	his	eyes.	Animals	frequently	toss	their
heads	in	order	to	solicit	attention.	Courting	women	do	it	regularly;	they	raise
their	shoulders,	arch	their	backs,	and	toss	their	locks	in	a	single	sweeping
motion.	Albatrosses	toss	their	heads	and	snap	their	bills	between	bouts	of
nodding,	bowing,	and	rubbing	bills	together.	Mud	turtles	extend	and	retract	their
heads,	almost	touching	noses.	Women	are	not	the	only	creatures	who	use	their
2
heads	to	flirt.
Men	also	employ	courting	tactics	similar	to	those	seen	in	other	species.	Have
you	ever	walked	into	the	boss’s	office	and	seen	him	leaning	back	in	his	chair,
hands	clasped	behind	his	head,	elbows	high,	and	chest	thrust	out?	Perhaps	he	has
come	from	behind	his	desk,	walked	up	to	you,	smiled,	arched	his	back,	and
thrust	his	upper	body	in	your	direction?	If	so,	watch	out.	He	may	be
subconsciously	announcing	his	dominance	over	you.	If	you	are	a	woman,	he
may	be	courting	you	instead.
Description:A contemporary classic about love now completely revised and updated.First published in 1992, Helen Fisher’s “fascinating” (New York Times) Anatomy of Love quickly became a classic. Since then, Fisher has conducted pioneering brain research on lust, romantic love, and attachment; gathered data