This is a very problematic thing. Fortunately, it doesn’t effect me personally. I’m happily married now for 23 years. But I wonder what the right thing is for people in this situation (like my sister). The best thing, obviously, is to never get into this situation, but once there, how do you react to the call of faith?
There have been plenty of answers, but let’s condense them into a short presentation.
- Cease conjugal relations, investigate the previous marriage, obtain a declaration of nullity, and marry the divorcee with whom one has been living.
- Cease conjugal relations, investigate the previous marriage, receive a declaration of the previous marriage’s validity, begin to take steps to cease “married” life with the person who is married to someone else. The precise arrangements should be worked out in consultation with pastors when there are children unfortunately involved.
Number 2 will most likely involve a lot of pain and heartache, so from our perspective it often looks like the separation is the tragedy. But consider that from God’s perspective, the institutionalized adultery of the “remarriage” was the tragedy, and the separation is the healing. Christ told us that we have to love him more than father, mother, husband, wife, brother, or sister. Answering the call of conversion means precisely that. It means reorienting one’s life to love God with one’s whole heart, and as John tells us in his first epistle, the way we know that we love God is if we keep His commandments - this includes those which govern marriage, and upon which he we not particularly vague (Matthew’s Gospel providing the one difficult phrase).
Are you seriously suggesting that converts who married a divorcee before becoming Catholic leave their spouse when they join the Church, pending the annulment process and remarriage within the Church?
I would not counsel full separation before one had learned the results of a marriage tribunal’s investigation. That seems like it would cause too much disruption in the event that one was free to marriage. However, there is absolutely no question that one *must *cease living as man and wife when there is a presumption that a previous marriage(/s) is valid, which will hold true for all but a few specific cases (e.g., if a Catholic’s previous “marriage” lacked proper ecclesiastical form, there is no presumption of validity).
That being said, however, I don’t really see how crazy it would be for an individual to leave someone to whom they are *not *in fact married when they convert, considering that Paul allows a convert to leave someone to whom
he is validly married if that spouse is unwilling to continue peacefully in marriage after the other’s acceptance of Christianity. That there is the foolishness of the Gospel choosing to avoid an occasion of sin (regression to one’s previous religion) over the good of a valid (though non-sacramental) marriage. We haven’t gone to that length. All we’ve asked here is that an individual cease sinning mortally.
That’s pure sophistry. I’ve been married to my wife for seven years on Sunday.

Whether or not the Church regards our marriage as a valid Catholic wedding (which, technically, it was not),
we sure as hell do, and so does God, who brought us together despite our living thousands of miles apart at the time, and through her drew me to Himself. If you’re seriously suggesting that on converting, people in our situation should move out pending the completion of an annulment process and remarriage, you’re living on another planet.

I understand the point you’re making, and in its icy abstraction, it is pristinely undisturbed by any need to be relevant to or engaged with reality. In terms of dealing with
actual human beings, it’s a non-starter. If what you were suggesting were to be taken seriously, it would close the doors of the Catholic Church to married would-be converts, virtually none of whom are going to leave their wives—yes, wives—even for Holy Mother Church.
Simon, you’ve hit the nail on the head, you’ve just made the wrong conclusion. You’ve said that faced with Christ’s teaching that one cannot remarry after a divorce, most people would choose to continue in their putative marriages rather than embrace Christ. I’m well aware of that. I have family members who did just that from
within the Church, let alone coming from outside of it. I don’t know your situation, so it may be possible that you can get married to the woman you consider your wife, in which case Christ may have been calling you to marriage and you just haven’t gotten to the end of His “to do” list for you. If, on the other hand, you are in a situation where you cannot validly marry, then you can determine objectively that God has not called you to your current relationship. That’s real. It doesn’t become less real because it is off-putting.
The issues that impede reception into the Church involve remarriage after civil divorce and the like.
As others have pointed out, though, these are not impediments at all. One is always free to live according to God’s law as it is assumed the situation demands. These issues only impede reception into the Church when individuals converting are not willing to clear the hurdle of the moral law while they wait to learn about their marriage. I’ve never understood why it is not universal practice for RCIA teams to inform people in irregular marriages that, as far as the Church can tell, they are gravely violating the moral law whether they enter the Church or not - what’s with the polite aversion of the eyes until we get a verdict, when the Church demands a presumption of the
previous marriage’s validity?