Brooks, David (2011-03-08). The Social Animal: The Hidden Sources of Love, Character, and Achievement (pp. 10-11). Random House, Inc.. Kindle Edition.
As Helen Fisher wrote in a chapter of The New Psychology of Love, “Most men and women fall in love with individuals of the same ethnic, social, religious, educational and economic background, those of similar physical attractiveness, a comparable intelligence, similar attitudes, expectations, values, interests, and those with similar social and communication skills.” There’s even some evidence that people tend to pick partners with noses of similar breadth to their own and eyes about the same distance apart. One of the by-products of this pattern is that people tend to unwittingly pick partners who have lived near them for at least parts of their lives. A study in the 1950s found that 54 percent of the couples who applied for marriage licenses in Columbus, Ohio, lived within sixteen blocks of each other when they started going out, and 37 percent lived within five blocks of each other. In college, people are much more likely to go out with people who have dorm rooms on the same hallway or the same courtyard. Familiarity breeds trust.”