@blueveinedthrobber,
Here is the wording of the Amendment:
Marriage between one man and one woman is the only domestic legal union that shall be valid or recognized in this State. This section does not prohibit a private party from entering into contracts with another private party; nor does this section prohibit courts from adjudicating the rights of private parties pursuant to such contracts."
It says this does not prohibit a private party from entering into contacts with another private party. I would think this includes a contract between couples and their insurance company.