I see intimacy as a derivative of three main components: intellectual connection, physical connection, and spiritual connection (not relating to religion in any aspects, but deeper understanding of a person's continuous and subconscious drivers). As such, true intimacy requires time and genuine desire to know ones parter and ways of how to best connect with him/her. Society these days focuses on the most basic level - physical - which merely requires attraction. It is the most common level and something I personally have no interst in. Why yourself short, when you can achieve true depth with a life partner?!