The source for this work is Act V, Scene iv, of Shakespeare's The Two Gentlemen
of Verona.
The Pre-Raphaelites
Valentine. Now I dare not say
I have one friend alive; thou would'st disprove
me
Who should be trusted now, when one's right hand
I've [sic] perjured to the bosom? Proteus.
I am sorry I must never trust thee
more
But count the world a stranger for thy sake.
Proteus. My shame and guilt confound me
Forgive me Valentine if hearty
sorrow
Be a sufficient ransom for offence,
I tender it here; I do as truly
suffer
As e'er I did commit.