This text comes from The Scottish Minstrel (Second Series), a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
O my love's like the red, red rose
That's newly sprung in June:
O my love's like the melody
That's sweetly play'd in tune.
As fair art thou, my bonnie lass,
So deep in love am I,
And I will love thee still, my dear,
Tho' a' the seas gang dry.
Till a' the seas gang dry, my dear,
And the rocks melt wi' the sun';
And I will love thee still, my dear,
While the sands of life shall run.
But fare thee weel, my only love,
And fare thee weel a while;
And I will come again, my love,
Tho' 'twere ten thousand mile.