Please point out where the 14th Ammendment says anything about Marriage.
It doesn't say anything explicitly about marriage, but we don't need it to.
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.
The amendment also doesn't say anything explicitly about abortion but was used to defend it. Obviously you'll never get the textualists on the court to support it (Scalia and Thomas), but it's a pretty cut and dry argument.