You changed your story.<quoted text>
It says, "nor deny to any person within its jurisdiction the equal protection of the laws", it doesn't say "nor deny to any person within its jurisdiction the equal protection of the laws, except those laws concerning marriage."
Begging the question.
Look up the term.
Then look up "Loving v VA".
You claimed there is a "right to marriage".
Obviously, the 14th, which you referred to, establishes no such "right".
If there was no marriage law of any kind, the 14th amendment would be entirely valid as written.
So, there is no right to marriage, unless you can point out an alternative source.