Dating non practicing catholic
The two joining in matrimony are the ones conferring the sacrament upon each other and not through the priest or deacon.
I was reading Kevin Cotter’s review of What if I told you, “Only 20% of the students that graduate from University XYZ acquire employment.” You would think that this must be a pretty lame university.
If the commitment was there at the beginning, but faded away later, no annulment will be granted.
The Church will only grant an annulment if there was not a full commitment at the start of the marriage.
Sacramentally speaking, each spouse in the marriage acts as a conduit of God’s grace to the other spouse, hence the reason it is a sacrament.
Christ is the source of this grace and the spouses serve as Christ to each other.