OP: I agree with this, although not for the same reason as Skeezyks. There isn't a diagnosis called Sex Addiction (although a vague diagnosis existed in DSM-IV-TR.) The idea of compulsive sexuality is highly controversial in the clinical mental health community. The proponents of the idea of sex addiction are either authors of books pushing the idea, or operators of sex addiction clinics/practices.

While there is some evidence of sexual compulsivity (as a unique/separate construct,) there is no evidence as to the mechanism, impulsive/compulsive or addictive (neurologically or behaviorally even!) There is also controversy about its connection to disorders like ADHD.

What does all this mean? Forget the label itself and focus on the impact it has on your life. I kind of agree that marriage might not fit, and be more careful with protection.