Man and woman were created for each other.
By their marriage, the couple witnesses Christ's spousal love for the Church. One of the Nuptial Blessings in the liturgical celebration of marriage refers to this in saying, "Father, you have made the union of man and wife so holy a mystery that it symbolizes the marriage of Christ and his Church." (Ref: U.S. Conference of Catholic Bishops)
Engaged couples need to contact the Pastor six months before their wedding date.