The matrimony is the Sacrament which unites a Christian man and woman in lawful marriage. Persons are lawfully married when they comply with all the laws of God and of the Church relating to marriage. To marry unlawfully is
a mortal sin, and it deprives the souls of the grace of GOD.
Marriage dates from the Garden of Eden, when God created Adam and gave him  Eve. But it was not a sacred union and look what happened we were thrown out of EDEN ! Don’t make the same mistake !
When did marriage become a sacrament ? No one knows exactly but it is obvious that it was raised to its exalted heights from passages in the New Testament and from the constant teaching of the Church ever since the time of the apostles.
Our Lord did not merely add grace to the contract, but He made the very contract a Sacrament, so that Christians cannot make this contract without receiving the Sacrament.

 The outward sign of God’s beauty in  Matrimony, and in what
 is the mutual consent of the persons, expressed by words or signs in accordance
with the laws of the Church. The whole essence of the marriage contract consists in the surrender by the persons of their bodies to each other and in declaring by word or sign that they make this surrender and take each other for husband and wife now and for life. This allows them to create a home for their future children.
The aims of marriage are in fact threefold :
1. To enable the husband and wife to aid each other in securing the salvation of their souls.
2. To propagate or keep up the existence of the human race by bringing children into the world to serve God. Be fruitful and multiply is the Word of the Lord our God.
3.  To prevent sins against the holy virtue of purity.

Are their any limitations to marriage ? Yes there are. Your church has to impose  impediments to marriage?  By impediments to marriage we mean certain restrictions, imposed by the law of God or of the Church, that render the marriage invalid or unlawful when they are violated in entering into it. These restrictions regard age, health, relationship, intention, religion and other matters affecting the good of all Christians.

 Can I  dispense from you or remove these impediments to marriage? We in the Church can dispense from or remove some of the impediments to marriage that arise from its own laws; but it cannot dispense from obstacles that arise from the laws of God and nature. Every lawmaker can change or excuse from the laws made by himself or his equals, but he cannot, of his own authority, change or excuse from laws made by a higher power.

Now having expressed my views on marriage I must also speak about divorce.  Does not a divorce granted by courts of justice break the bond of marriage?
Divorce granted by courts of justice or by any human power does not break the bond of marriage, and one who makes use of such a divorce to marry again while the former husband or wife lives commits a sacrilege and lives in the sin of adultery. A civil divorce may give a sufficient reason for the persons to live apart and it may determine their rights with regard to support, the control of the children and other temporal things, but it has no effect whatever upon the bond and spiritual nature of the Sacrament of Marriage. I know I am a bit old fashioned in this respect. But it is not right to allow husband and wife to separate and live apart; dissolving the bond of marriage, or divorce as it is called, for though separated they are still husband and wife, and to think otherwise is to begin to take the steps on the path to Hell.