A majority of symptoms can point to addiction, esp. the inability to stop despite consequences....he continued AFTER his marriage.
The most significant group of symptoms:
a dysfunctional preoccupation with sexual fantasy,
often in combination with the obsessive pursuit of casual or non-intimate sex;
pornography;
compulsive masturbation;
romantic intensity and objectified partner sex for a period of at least six months.
By definition, this adult obsessive pattern of thoughts and behaviors will continue despite:
Attempts made to self-correct problematic sexual behavior
Promises made to self and others toward sexual behavior change
Significant, directly related negative life consequences in life and relationship stability,
emotional and physical health concerns,
or career and legal problems.
http://psychcentral.com/lib/hypersexuality-symptoms-of-sexual-addiction/00011488
Important: Bi-polar disorder and Obsessive Compulsive Disorder also can have a sexual acting out component, and should be ruled out by a professional exam.