This text comes from The Poetical Works of Robert Burns, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Thou hast left me ever, Jamie,
Thou hast left me ever;
Thou hast left me ever, Jamie,
Thou hast left me ever.
Aften hast thou vow'd that death
Only should us sever;
Now thou'st left thy lass for aye—
I maun see thee never, Jamie,
I'll see thee never!
Thou hast me forsaken, Jamie,
Thou hast me forsaken;
Thou hast me forsaken, Jamie,
Thou hast me forsaken.
Thou canst love anither jo,
While my heart is breaking;
Soon my weary een I'll close—
Never mair to waken, Jamie,
Ne'er mair to waken!