A person prominent psychological idea of love, the triangular principle, was introduced in the eighties through the American psychologist Robert Sternberg. Sternberg argued that love has a few psychological components: intimacy, enthusiasm, and selection or determination. Acquainted forms or act

We can easily say this when an individual did something which strongly impacted us emotionally, or was very important in our life. Such as, I might say this to the teacher who helped me lots through higher education, or to an acquaintance who assisted convenience me following a lousy breakup