There are many...but here are a couple of Oldies but Classic's:
A Red, Red Rose by Robert Burns
O my Luve's like a red, red rose
That's newly sprung in June;
O my Luve's like the melodie
That's sweetly played in tune.
As fair art thou, my bonnie lass,
So deep in luve am I;
And I will luve thee still, my dear,
Till a' the seas gang dry:
Till a' the seas gang dry, my dear,
And the rocks melt wi' the sun;
I will luve thee still, my dear,
While the sands o' life shall run.
And fare thee weel, my only Luve,
And fare thee weel awhile!
And I will come again, my Luve,
Tho' it ware ten thousand mile.
Sonnet 43 - How do I love thee? Let me count the ways by Elizabeth Barrett Browning
How do I love thee? Let me count the ways.
I love thee to the depth and breadth and height
My soul can reach, when feeling out of sight
For the ends of Being and ideal Grace.
I love thee to the level of everyday's
Most quiet need, by sun and candle-light.
I love thee freely, as men strive for Right;
I love thee purely, as they turn from Praise.
I love thee with the passion put to use
In my old griefs, and with my childhood's faith.
I love thee with a love I seemed to lose
With my lost saints,—I love thee with the breath,
Smiles, tears, of all my life!—and, if God choose,
I shall but love thee better after death.