The Roud index, #578 cites this as a related song:

From The Bodleian Library Ballads Catalog, Firth c.18(139)

THE MAID OF BEDLAM.

One morning very early, one morning in the spring,
I heard a maid in Bedlam, who mournfully did sing;
Her chain she rattled on her hands, while sweetly thus sung she—
I love my love because I know my love loves me.

Oh, cruel was his parents, who sent my love to sea,
And cruel, cruel was the ship that bore my love from me,
Yet I love his parents, since they're his, altho' they've ruined me;
And I love my love because I know my love loves me.

Oh, should it please the pitying powers to call me to the sky,
I'd claim a guardian angel's charge, around my love to fly!
To guard him from all dangers, how happy should I be!
For I love my love because I know my love loves me.

I'll make a strong garland. I'll make it wondrous fine,
With roses, lilies, daisies, I'll mix the eglantine,
And I'll present it to my love when he returns from sea
For I love my love because I know my love loves me.

Oh, if I were a little bird to build upon his breast;
Or if I were a nightingale, to sing my love to rest,
To gaze upon his lovely eyes, all my reward should be;
For I love my love because I know my love loves me.

Oh, if I were an eagle to soar into the sky,
I'd gaze around with piercing eyes, where I my love would spy
But ah, unhappy maiden, that love you ne'er shall see;
Yet I love my love because I know my love loves me.