In America, we are demanding everything from our marriage.

— Helen Fisher

In general, men are wired to notice obvious signs that convey interest in mating - a warm smile, for example - and ignore other subtleties, like if your lipstick is faded.

— Helen Fisher

I think romantic love evolved to enable you to focus your mating energy on just one individual at a time, thereby conserving mating time and energy.

— Helen Fisher

I've always maintained that men were more romantic than women.

— Helen Fisher

Jealousy can even be good for love. One partner may feel secretly flattered when the other is mildly jealous. And catching someone flirting with your beloved can spark the kind of lust and romance that reignites a relationship.

— Helen Fisher

Men have a psychological need to show off their courage and strength. When he sees you talking to another guy, that instinct kicks in, and he jumps to protect you and prove he's worthy of your love.

— Helen Fisher

Men with high baseline levels of testosterone marry less frequently, have more adulterous affairs, commit more spousal abuse, and divorce more often.

— Helen Fisher

Natural beauty really entices men. They will tell you this time and time again, and studies consistently prove it.

— Helen Fisher

People compose poetry, novels, sitcoms - for love.

— Helen Fisher

Psychologists maintain that the dizzying feeling of intense romantic love lasts only about 18 months to - at best - three years.

— Helen Fisher