The Institution of Marriage and Family holds all of the rules and guidelines by which we pair off, support each other for a lifetime, have and rear children through to adulthood. The process of institutionalization of behaviors and thinking about marriage and family emerges through trial and error methods. In Darwinian terms - institutions evolve out of social living - resulting in the survival of the fittest, most tenable methods for satisfying social and individual needs. For example, we needed a process of mate selection to propagate society.
Dating evolved as part of that process. Pairing off to begins as a way for young people to develop and explore their abilities as suitable "love interests", to engage the object of their hearts, and to have fun. Though partially unaware of the true meaning of the process, these adolescents will, in time, use dating as a way sort through the pool of eligibles to find the right person with whom they will have a family.
In times past, when love and marriage were not so inextricably tied together, mate selection was seen as too important a task to be left up to young people. This was especially true among royals and the upper class. Marriages would cement bonds between families with common political and economic interests. It is simply more difficult to invade France if one's son is married to the Princess of Tuscany or whatever. As personal fortunes and property became more important, concomitant with the creation and rise of the merchant class, marriages were seen as a way to cement loyalties between people not tied by blood relation. It is simply easier to pass one's millions to offspring and on one's relations. Marriage, because of it's importance beyond the young couple, became an arranged situation to secure these purposes. Thus, we have all the wonderful stories of monarchs marrying off their embryonic sons in prearranged agreements to the yet to be born daughters of other monarchs. Interestingly, stories of courtly love exist along side ones telling about the staleness of arranged marriages. One fights for the honor of maidens (King Arthur), the reward being a smile from one so lovely (since they dare not speak directly to each other).
Later on historically, as nationalism becomes less important, and society becomes more capitalistic and highly mobile, romantic love comes into vogue. Children are encouraged to choose their own mates here (within limits). Dating emerges as a device by which youngsters may get to know a wide variety of potential mates in a relative hurry. This couldn't happen until the society, as a whole, became more affluent. Teenagers need transportation and means!
As institutionalization occurs, spontaneous and experimental behaviors are replaced with more regulated, patterned behavior - which is the case for dating. While always evolving, dating is probably here to stay.
Individuals have Institutionalized roles to play in all this. These are sets of behavioral expectations which limit expression of personal eccentricity in favor of normally recognized behaviors. Our personalities are modified to fit the expectation, rather than being allowed to freely be expressed. By and large, social roles are strictly adhered to:
For example: A young dating couple have fun, explore each other's strengths and weaknesses, and generally get to know each other. They do all this behind a rather rigid set of roles. After several dates, they decide they must be in love. They feel passionately about each other. They also enjoy their youth. Now suppose they marry. What would happen, if college sweethearts, emersed in university life (frat parties, casual and revealing dress codes, spontaneous make-out sessions) eventually marry. The wife continues to drink heavily at company parties, wear short skirts, tube tops, no stockings, and smooches on her hubby in front of his colleagues. He continued to develop into a business and family man. She remained the college girl. Failure to adopt the spouse role results in failure of the marriage.
Socialization for marriage
Most of us emerge from adolescence with a positive marriage orientation
- due to:
The Search for a Mate
In preparation for marriage, the more successful marriages have common elements.
2. Financial adequacy is assured - marriage costs a lot of money, particularly if children are part of the deal. In addition to maturity factors, the main reason for failure of very young marriage is financial in nature.
Propinquity, Similarity, Complementarity, and Compatibility
Theories of Mate Selection:
This theory suggests that, through the process of Assortative Dating, we begin to narrow the field of suitable partners from many to one. We do this by submitting dates to a series of tests.
The Clockspring Theory - love develops between two people as their relationship progresses through a series of related and mutually reinforcing stages.
Love begins with:

Pairing Off / From Assortative/Casual to Serious/Exclusive Dating
Here more investment is put into the relationship - matched in equal
parts by each partner. Friends who are not in serious relationships tend
to be pushed away, replaced by "couples" who will do "couples" things recreationally.
We have couples over for dinner parties, instead of catching a buzz with
our friends.
Engagement and/or Cohabitation fits here as a period of extended exclusivity.
Exclusivity:
Requirements for a Wedding include:
A marriage contract is different from other legal contracts, in that parties do not usually draw up terms of agreement themselves. Contract provisions are finely printed by the state, and alteration of the contract must be state approved there are age requirements.
Legal Qualifications for a valid marriage:
Separate Property means that which was acquired before the marriage received during the marriage by one spouse only as a gift, or inheritance can become community property if commingled with the marriage's goods. Separate property states are few anymore but require that all income property is retained by the acquiring spouse. Leaves housewives in the lurch - usually some alimony rule is in effect., in the case of divorce.
Some Marital Legal Obligations:
Interpersonal contracts
The function of the marriage ceremony:
From David Olson's Guidelines for a Happier Marriage
Annotated References
Grover, K.J. et al (1985). Mate selection processes and marital satisfaction. Family Relations, 34, 383-386. Length of courtship (over two years) prior to marriage was strongly related to marital satisfaction. These couples also did not interpret daily conflict as negatively as short-term daters.
Kendrick, D.T., Groth, G.E., Trost, M.R., & Sadalla, E.K., (1993). Integrating evolutionary and social exchange perspectives on relationships: Effects of gender, self-appraisal, and involvement level on mate selection criteria. Journal Personality and Social Psychology, 64, 951-569. Men were less selective than women in their criteria for a casual sexual partner. Their criteria had little to do with the male subjects self-ratings along dimensions of attractiveness, family orientation, dominance, and status. In mate selection however, gender differences were not significant - both genders tended to place highest value on emotional stability and agreeableness as well as attractiveness when selecting partners for marriage.
Sprecher, S., sullivan, Q., & Hatfield, E. (1994). Mate selection preferences: Gender differences examined in a national sample. Journal of Personality and Social Psychology, 66(6), 1074-1080. Women were more willing to marry a mate who was not good-looking, older by 5 years, earned more, and had more education. The converse being true for men, with the exception of physical attractiveness. There were no differences between groups differentiated by race.
Teachman, J.D., and Polonko, K.A. (1990). cohabitation and marital stability in the U.S., Social Forces, 69, 207-220. While interesting findings emerged, the main hypothesis that cohabitation increases the likelihood of marital disruption was not supported.