(An amendment to the Texas Constitution in 2005 limits marriage to opposite-sex relationships and prohibits similar, alternative legal arrangements.)
"Only opposite-sex relationships should be granted the benefits of marriage."
Axiom 42: An increase in cultural masculinity will produce an increase in the sharpness of the stranger-ingroup distinction drawn for opposite-sex relationships.
The basis for the limitation was that it would be easy for the courts to determine the validity of an opposite-sex relationship if there were children.
In their essential psychological respects, these relationships are regarded as equivalent to opposite-sex relationships.