Marriage Counseling Advice-- Sex Addict Husband, HELP!!?

My husband is a sex addict who is in denial. We have been married now for almost 8 months and have a beautiful baby boy together. I love him very much but for the last 6 months he has been getting really bad about watching pornography and wanting to experiment sexually and has even gone as far as answering personals ads on craigslist. He will set up meetings and exchange dirty messages and pictures but never follows through on any of the meetings. We have talked and decided to do marriage counseling but now he isnt' so sure he is comfortable meeting with the counselor and discussing our issues because he is embarassed by how he has been acting. I don't know what else I can do to save our marriage if he bails on the counseling and truthfully I find myself wondering why I keep doing the majority of the fighting for our relationship on my own. I truly love my husband with all my heart but I just don't know what to do, I don't want to lose him but he is really hurting me emotionally and its not the kind of life I want for me or my son. HELP!