I don't agree with your definition and neither does the overwhelming majority of mankind.
Thankfully we are not a MOB RULE country, but a country ruled by law. Either you support that concept or move out.
Oh and by the way, thanks for bringing up the Constitution. Being that it's 4:30 in the morning, I let your other comment slip by. But here you go
The 14th Amendment
Section 1. All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.
So I say again. If certain rights and privileges are granted by the law to those who are married, then marriage must legally be available to all regardless of their preference.
PS that also takes it OUT of the hands of the individual states.