There can be no such thing as a “right” to marry. Marriage is an agreement. No one can guarantee ever finding another to enter into such an agreement. It cannot be a right.
The right to speech, kbr, religion, free press, petitition, etc., are all based in the individual and completely actionable by the individual.
My voice can speak. My hand can carry a gun. My soul can worship God.
My vow can marry without regard to anyone else? I don’t think so.
That makes sense, but seems to fly in the face of the explicitly enumerated Constitutional right to peaceably assemble.
For what it's worth, I agree there's no right to marry, in the sense that the government has no business endorsing sexual relationships at all.