Study: lust, infatuation, and attachment. Each component is characterized by specific brain chemistry. (Pease, Barbara and Allan. Why Men Don’t Have a Clue and Women Always Need More Shoes. p 226-230. NY: Broadway Books, 2004.)

Discusses the inverse relationship between lust and attachment. It is dose dependent (e.g., increasing testosterone can decrease vasopressin and oxytocin, increasing vasopressin can decrease testosterone, increasing oxytocin in both males and females can decrease the impact of dopamine and norepinephrine). (Fisher, Helen, PhD. The First Sex. p 90-100. NY: Random House, 1999.)