period of time. Something to note about commitment, however, is that one can be committed to someone without feeling love for him or her, and one can feel love for someone without being committed to him or her. Commitment is considered to be the "cold" love because it does not require either intimacy or passion. Sternberg believed that committed love increases in intensity as the relationship grows. Commitment can be present with friends as well. Sternberg believed love to progress and evolve in predictable ways — that all couples in love will experience intimate, passionate, and committed love in the same patterns. Although these types of love may contain qualities that exist in non-loving relationships, they are specific to loving relationships. A description of non-love is listed below, along with the other kinds of love. These kinds of love are combinations of one or two of the three corners of Sternberg's triangle of love. Forms of love The three components, pictorially labeled on the vertices of a triangle, interact with each other and with the actions they produce so as to form seven different kinds of love experiences (nonlove is not represented). The size of the triangle functions to represent the "amount" of love—the bigger the triangle, the greater the love. Each corner has its own type of love and provides different combinations to create different types of love and labels for them. The shape of the triangle functions to represent the "style" of love, which may vary over the course of the relationship: Non love The absence of any of the three types of love. No connection. Indifferent to relationship. Liking/friendship This type of love is intimacy without passion or commitment. This includes friendships and acquaintances. Infatuated love: Infatuated love is passion without intimacy or commitment. This is considered "puppy love" or relationships that have not become serious yet. Romantic relationships often start out as infatuated love and become romantic love as intimacy develops over time. Without developing intimacy or commitment, infatuated love may disappear suddenly. Empty love is characterized by commitment without intimacy or passion. A stronger love may deteriorate into empty love. In an arranged marriage, the spouses' relationship may begin as empty love and develop into another form, indicating "how empty love need not be the terminal state of a long-term relationship ... [but] the beginning rather than the end". Romantic love This love is passionate