Although everyone ultimately must make their own decisions about whether or not to get tested and whether or not to share their results, any efforts to keep results from a loved one probably would be counterproductive. A relationship built on honesty and openness is a healthy relationship. Sharing your results with your partner enables you to tap into their emotional support and love.
Some women who test positive for altered BRCA1 or BRCA2 genes and who have a number of other compelling risk factors may opt to take some preventative measures, such as starting on the drug, tamoxifen. Such decisions and lifestyle modifications are best made with the help and support of loved ones.
Apart from the emotional implications, the decision to be genetically tested entails other responsibilities. What you find out affects not only you, but your children and your other immediate relatives. You have a responsibility to share your results with your family.