How can I get help/support for compulsive sexual behavior?

You may wish to consult Mental Health America’s webpage to learn about signs, treatment, and mental health effects of compulsive sexual behavior.

The following resources may help:

SexHelp.com offers a free online screening tool to help people identify whether their sexual behaviors are cause for concern, and a find a therapist search function to find an IITAP-trained (International Institute for Trauma and Addiction Professionals) therapist. 
Sex Addicts Anonymous offers information, self-assessment tools and a find a meeting locator for 12-step recovery-based meetings for those committed to recovering from sex addiction.

S-Anon International Family Groups offers 12 Step meetings for family and friends of sex addicts. Use S-Anon find a meeting locator to search for a meeting near you.