There's a chunk of Song of Songs which the CofE use for weddings which I think is good, and not actually smutty 
2.10-13; 8.6,7
My beloved speaks and says to me:
'Arise, my love, my fair one,
and come away;
for now the winter is past,
the rain is over and gone.
The flowers appear on the earth;
the time of singing has come,
and the voice of the turtle dove
is heard in our land.
The fig tree puts forth its figs,
and the vines are in blossom;
they give forth fragrance.
Arise, my love, my fair one,
and come away.'
Set me as a seal upon your heart,
as a seal upon your arm;
for love is strong as death,
passion fierce as the grave.
Its flashes are flashes of fire,
a raging flame.
Many waters cannot quench love,
neither can floods drown it.
If one offered for love
all the wealth of one's house,
it would be utterly scorned.
For the epistle I had Colossians 3.12-17 for my wedding -
As God's chosen ones, holy and beloved, clothe yourselves with compassion, kindness, humility, meekness, and patience. Bear with one another and, if anyone has a complaint against another, forgive each other; just as the Lord has forgiven you, so you also must forgive. Above all, clothe yourselves with love, which binds everything together in perfect harmony. And let the peace of Christ rule in your hearts, to which indeed you were called in the one body. And be thankful. Let the word of Christ dwell in you richly; teach and admonish one another in all wisdom; and with gratitude in your hearts sing psalms, hymns, and spiritual songs to God. And whatever you do, in word or deed, do everything in the name of the Lord Jesus, giving thanks to God the Father through him.