Welcome to SR. As always, I am sorry for what brings you here.
Please keep reading about addiction, know the demon you will be dealing with. Without some kind of support and knowledge, it can and will leave you emotionally, physically, and spiritually broken.
Sadly, less then 3% of crack addicts recover for life. Research is showing that crack and sex addiction are often intertwined.
Cynical One (another poster) has a great blog to help educate you further, I would suggest you read it, read the stickies on top, read Codependent No More and keep posting. You sound like many....on a roller coaster to hell.
You are not alone!