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 FisherMen couldn't care less if your strands are perfectly styled and neat. In fact, he might like you more with some wildness or bedhead, since it shows you're carefree and relaxed.
Helen FisherI 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