Dear Arn:

I am sorry to hear that your marriage is heading for divorce. It is always sad to hear. We will certainly be in prayer for both you and your wife.

In terms of Sacramentality, all marriages between a validly baptized man and a validly baptized woman is presumed to be Sacramental unless evidence suggests otherwise as determined by the Marriage Tribunal.

Addiction to pornography and masturbation is not, in itself, evidence of a lack of a Sacramental marriage. Many other factors would have to be present and evaluated by the Marriage Tribunal. Immaturity that impairs one's understanding of the purpose and sacramentality of marriage can be a reason for a declaration of Nullity.

The Tribunals evaluated the circumstances of the marriage against well defined factors that invalidate a Sacrametal marriage. Some factors are as easy as 1 + 1 = 2 such as a proven fraud, or an attempted marriage of a priest or a religious, or an attempted marriage with an underage person, or a with a 1st cousin. Most annulments in the United States, I think are based upon immaturity. Determining that requires more subjective discernment and cannot be determined like an easy mathematical equation.

Can the Tribunal make a mistake? Yes, technically it is possible, but even with the more subjective reasons for a Nullity the reasons to prove Nullity are rather self-evident. When subjective discernment is needed the Tribunal is inspired by the Holy Spirit. God will not leave such an important issue as the validity of marriage without sending His Holy Spirit to guide those who make the judgment.

If you want a definitive decision on your marriage then you will need to apply for an annulment. I would advise that anyway. It is best to get this over with so that if you decide to remarry someday you will be able to do it, or if you decide to become a priest or religious you will be able to do that.

The annulment process tends to be a healing process. The annulment process cannot be started, however, until the divorce is final.

I have been through this myself when my wife ran off with another man. I do not regret it at all, and of course, I could not be a "brother" without an annulment.

It is your choice about applying for an annulment, you do not have to.  But if you do apply for it, and your ex-wife doesn't either, then Sacramentality is presumed and you are considered by God and the Church to still be married, even though under civil law you are divorced.

If you ex-wife applies for and is granted an annulment, that will apply to you too.

God bless,
Bro. Ignatius Mary

P.S. For the sexual addiction you may want to check out the Catholic Support Group for Sexual Addiction Recovery.