Your CPF nomination will be revoked upon marriage. This means that once you get married, the nomination that you have made before your marriage will no longer be valid, and you will have no CPF nomination.
This is because when you get married, you will form a new family nucleus. Your nomination is thus revoked upon marriage so that you can reconsider who you wish to nominate, based on your new family nucleus. This practice is similar to wills, which are also revoked upon marriage under the Wills Act.
You should
make a new CPF nomination after your marriage if you want your CPF savings to be distributed according to your wishes.