re: #410 Salamantis

And now for my position on gay marriage:

Permit gay civil unions, with all of the same legal rights and privileges that heterosexual marriage grants (tax status, mutual inheritance rights, spousal medical decisionmaking authority, spousal employment benefits, spousal insurance benefits) while reserving the traditional term of marriage for heterosexual unions.

Are civil unions homosexual only and restricted to two non-related people, and if so, why?