https://www.sexhelp.com   This is a link which has some personal self test one can complete if they are looking for whether sexual addiction applies to them.  

For those in that are seeking something faith based, a wonderful resource that can help is the following:  https://puredesire.org

For those seeking assistance in their marriage, the following are great resources:

https://www.gottman.com/couples/

http://www.drsuejohnson.com/about/

The following is a list of recovery fellowships that may be helpful to you to join in your particular situation. 

Co-Dependents Anonymous  

http://coda.org

Co-Dependents of Sex Addicts (COSA)

http://www.cosa-recovery.org

S-Anon

https://www.sanon.org  

Sexaholics Anonymous  

https://www.sa.org

Society for the Advancement of Sexual Health

(770 541 9912)   www.sash.net

Books that can help: 

The Betrayal Bond:  Breaking Free of Exploitive Relationships by Dr. Patrick Carnes

Sexual Anorexia:  Overcoming Sexual Self Hatred (Dr. Patrick Carnes with Joseph Moriarity)

Mending a Shattered Heart: A Guide for Partners of Sex Addicts by Stefanie Carnes

When He's Married to Mom: How to Help Mother-Enmeshed Men Open Their Hearts to True Love and Commitment by Kenneth Adams and Alexander P. Morgan