Here is the actual format of the ceremony from the Book of Blessings. We are having ours done right before a daily mass. So it’s not connected with a mass, but is done before the mass begins, which is totally legitimate
BLESSING OF AN ENGAGED COUPLE (to be done by a priest…)
(Sign of the Cross)
In the Name of the Father,
and the Son
and the Holy Spirit.
Let us pray:
Heavenly Father,
we praise You for Your goodness
in bringing us together to celebrate in joy.
Grant that all our festivities
may be for your honor and glory.
We ask this grace
through Jesus Christ our Lord.
Amen.
Let us pray for Teresa and Jonathan
and for their families and friends,
and ask God’s help for all in need:
(Moment of silence)
Lord, bless Teresa and Jonathan,
and help them as they prepare for marriage.
We pray to the Lord.
R. Lord, hear our prayer.
Keep them holy and pure in their lives,
deepen their spirit of prayer and love,
and lead them in perfect joy.
We pray to the Lord.
R. Lord, hear our prayer.
Bless their parents, families and friends,
and lead us to help Teresa and Jonathan
by our prayer and example as they prepare to marry.
We pray to the Lord.
R. Lord, hear our prayer.
Have mercy on all who suffer need or pain,
and through our generosity and love,
bring them help and consolation.
We pray to the Lord.
(Concluding prayer…)
Father,
hear our prayers in Your love.
Bless this couple, and help them as they prepare
to celebrate the sacrament of marriage.
Father, we ask this grace through Christ, our Lord.
Amen.
(Blessing of the ring…)
Father in heaven,
bless + this ring,
and grant Teresa and Jonathan Your grace,
so that they may prepare worthily
for the sacrament of marriage,
and live as Your beloved children.
Grant this, Father, through Christ, our Lord.
(Blessing of the engaged couple…)
May almighty God bless you, Teresa and Jonathan
May He grant you love and happiness,
peace and joy, and strength in trials,
all the days of your life together.
May almighty God,
Father, Son, + Holy Spirit,
give His blessing to you forever and ever.
Amen.