In marriage, we are no longer two, but three: Christ becomes fully part of our marriage. By getting married in the church, we invite Jesus into our marriage.The bond that Christ creates between us is as indissoluble and as strong as the bond that unites Him to the Church. Now we do not rely on our feelings or our own strength. Our love is sealed with God, and becomes unbreakable.

Christ will transform our marriage into something much greater if we allow it.Jesus was invited to a wedding in Cana and transformed the water into wine to rejoice everyone.
On the third day there was a wedding in Cana in Galilee, and the mother of Jesus was there. Jesus and his disciples were also invited to the wedding. - John 2, 1-11
The story of Jesus at Cana also demonstrates the great importance and value Christ places on marriage. Christ started his ministry there with his very first public miracle.

On the threshold of his public life Jesus performs his first sign – at his mother’s request – during a wedding feast. The Church attaches great importance to Jesus’ presence at the wedding at Cana. She sees in it the confirmation of the goodness of marriage and the proclamation that thenceforth marriage will be an efficacious sign of Christ’s presence. Catechism of the Catholic Church 1613

Bishop Fulton Sheen wrote a very good book that we strongly recommend called Three to Get Married.

The sacrament of matrimony is, along with the sacrament of the Holy Orders, a sacrament at the service of communion.See Article No. 1534 of the Catechism.

We, as spouses, are called to be in communion with each other, spiritually, physically and mentally. Christ’s grace helps us achieve this communion. It goes a lot further than mere communication. We can have a good communication with many people; it doesn’t mean that we will automatically be in communion with these persons.