make it even better. In addition to having her marriage connsumated by another man, have her fuck someone while wearing her wedding gown just before the wedding so that she comes to the alter (civil ceremony, whatever way you marry) with another man's cum running down her legs and (if she cleaned his cum-covered cock afterward), when they say, "You may kiss the bride," you'll taste another man's cum and smell his scent in your first marital kiss.
I love the idea of her spending her wedding night fucking another man and sleeping cuddled up with him, not you, so that you don't get to fuck her until the next day, and maybe not even then. As cucktrix says, it's much better if she tells you that she wants to feel a real man's cock on her wedding night, and that she doesn't want you.