No, but marriage as we knew it, has already ended in many places. Heterosexual couples will still get married.
Marriage as we knew it in ended in 1973.
What we have now is gay marriage for heterosexuals, and although I oppose legalizing pretend marriages for same sex couples, it’s important to acknowledge that traditional marriage (permanent, legal enforcement of fidelity, no remarriage with a living spouse) is already illegal in all 50 states.