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. Here more investment is put into the relationship - matched in equal parts by each partner. We have couples over for dinner parties, instead of catching a buzz with our friends down at the tavern.
Cohabitation fits here as a period of extended exclusivity.
Absence of duress, coercion, or undue influence on either party. 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. With parental consent - as early as 13 years of age in some states. Inclusive is all wages, salaries, and income from property, or investments.