Hello,Welcome to Just Answer and thanks for your question. Marriage records for New York are not available online. The links below explain how you can apply for a copy of your parents' marriage records.
After asking about my grandfather og giving more information, which I haven't recieved any answer, I have gotten an Unlimited Subscription with 24/7 access, what ever that means.
The question about my parents marriage was used with the unlimited subscription, so I presume that I don't have to pay for you answer.
You have paid for the subscription, but you do have to accept the answer if I am to get paid. It doesn't cost you any more.