A friend of a friend is getting married in a few months and after being engaged for almost a year and having dated the guy for several years he gave her a prenup to sign. Now I don't know if they discussed it earlier but she was shocked with the level of detail in the agreement, and shocked further that in the case of a divorce she would get nothing. She couldn't even get her name on the deed of a house they bought. He finally gave into some of her requests and I think the wedding is still set for this summer.
Dave and I don't have a prenup because neither of us had anything to bring to our marriage financially when we got engaged -- both of us were just of school -- but if you or your fiance have property or financials you won't to protect it's okay to ask your significant other to sign a prenup. It doesn't mean that you think the marriage is doomed from the start, but g-d forbid you land in divorce court one day at least you are somewhat protected.
And if you do need a prenup make sure it is put together by a lawyer. I think some celebrity had a prenup written up on a cocktail napkin and the judge threw it out. She got millions upon millions in the divorce.
