But, the 14th Amendment says:<quoted text>
Oh my god you are an idiot.
Have you ever read the Constitution? How about the 9th and 10th Amendments?
The Constitution doesn't enumerate "right's" it enumerates power to the federal government. In this case, marriage is NOT listed, thus it is NOT a power of the Federal Government- that includes the SCOTUS.
The Federal Government lacking said power leaves that power to the states and the people- the regulation of marriage.
"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."
That would include the laws governing marriage.