Iscool:
I think there is a fundamentally different view here with respect to marriage. In the context of the passage you cite, if a Catholic marries a non-believer, that sacramentally constitutes no marriage. If a Catholic marries a Proestant, that would be seen differently than non-believer, but could potentially be grounds for an annulment if the Protestant is hostile to his/her spouses Catholic faith [and that can be documented], then the Catholic could be free to remarry. Now, if the unbeliever departs [using St. Paul’s term and how the Catholic Theological tradition understands it, at least my understanding of that understanding], then the Catholic, after an annulment which declares no Sacrament of Holy Marriage happened, could re-marry. Notice, the context is Catholic [or Christian believer] and atheist or unbeliever.
To say there is no sin in divorce and remarriage, if the first marriage was truly a Christian Marriage is incorrect, at least from the Catholic Theological Tradition. The image of Marriage in the NT is CHrist and his Bride the Church, and in that context, Christ will always be faithful to her. Marriage between two Catholics is by God’s Grace, supposed to reflect Christ’s Love for his Church. Now Divorce, if one does not re-marry is in and of itself not a sin, that is correct, but notice, what the Catholic understanding is Divorce and No-remarriage. So a Catholic that truly entered into a Marriage with another Catholic freely with no impediments is not free to remarry if there is a divorce. Lets put it this way, for me, there is no Divorce and remarriage [there is no divorce either, have a great Catholic wife]. For me it is death till us part end of story.
Congrats to ya...Getting more and more rare these days...