As Soon As Possible
That's the fun answer. And it's the appropriate answer if you live in a world of fantasy, a world devoid of emotional and physical consequences. Since you don't, it is important to consider carefully when you will allow sex to enter a new relationship.
Live, Love, Laugh and Be Happy
Sex is wonderful. It is fun, exhilarating, stress relieving-the icing on the cake of a great relationship. But, it is not to be entered into lightly. No matter what your feelings regarding sex may be, it is an inherently complicated endeavor, mixing issues of trust, self-esteem, love and health. In a relationship, none of these issues can be addressed adequately in a night, a week or a month.
Sex Tempts Disease
STD's that is. It always has and always will. The exchange of fluids in a moist, warm environment is a welcome place for microbes. If you're going to exchange yours then you best have some knowledge of, and faith in, the status of your lover's health. And that is tough to know for sure if you've known each other for a short time only.