My brother-in-law Justin and Sister-in-law Sarah are expecting their first child! I am very excited for them! They are due next March! I find it very interesting watching them go through all the exciting and joyful times just like my wife and I did, not so long ago. In just January they entered into the Sacrament of Marriage! Now they are on their way to becoming parents and experiencing the joys of having children! I pray for them that they will be able to navigate through all of lifes difficulties that may come their way.

Right from the Compendium of the Catechism of the Catholic Church. I don't think it can be any clearer what the church teaches about marriage and divorce:

347. What sins are gravely opposed to the sacrament of Matrimony?
1645-1648
Adultery and polygamy are opposed to the sacrament of matrimony because they contradict the equal dignity of man and woman and the unity and exclusivity of married love. Other sins include the deliberate refusal of one’s procreative potential which deprives conjugal love of the gift of children and divorce which goes against the indissolubility of marriage.

Here is a link to the compendium:
http://www.vatican.va/archive/compendium_ccc/documents/archive_2005_compendium-ccc_en.html