Recognize that you've been assaulted too. We can't help but hurt when someone we love is made to suffer. Don't blame yourself for the many feelings you will have. Common emotional reactions include anger, helplessness, guilt, shock, anxiety, and depression. Being aware of these emotions will help you better understand the survivor's experience and be more supportive.
Get help for yourself. Whether you reach out to another friend, family member, or counselor, make sure you don't go through this alone. Most rape crisis centers, realizing the impact of rape extends far beyond the survivor, offer counseling for family and friends. Suppressing your own feelings will only make you less available to support the survivor.