[zakk]

It's quite rare for a woman to be complete devoid of those assets, unless she has had them removed due to illness. It may be that she is small and also is covering modestly.

If it is really a deal-breaker, then don't marry her. But bear in mind that often a great deal of love comes after marriage, and often people look better and better to us. Also, the perception of sex and sexuality to the inexperienced can change a lot after one gains some experience in that matter.