This acknowledgment of the change which love had made in the disposition of Valentine was a great triumph to his friend Protheus.  But friend Protheus must be called no longer, for the same all-powerful deity Love, of whom they were speaking (yea even while they were talking of the change he had made in Valentine) was working in the heart of Protheus; and he, who had till this time been a pattern of true love and perfect friendship, was now, in one short interview with Silvia, become a false friend and a faithless lover; for at the first sight of Silvia, all his love for Julia vanished away like a dream, nor did his long friendship for Valentine deter him from endeavouring to supplant him in her affections; and although, as it will always be, when people of dispositions naturally good become unjust, he had many scruples, before he determined to forsake Julia, and become the rival of Valentine, yet he at length overcame his sense of duty, and yielded himself up, almost without remorse, to his new unhappy passion.

Valentine imparted to him in confidence the whole history of his love, and how carefully they had concealed it from the duke her father, and told him, that despairing of ever being able to obtain his consent, he had prevailed upon Silvia to leave her father’s palace that night, and go with him to Mantua; then he shewed Protheus a ladder of ropes, by help of which he meant to assist Silvia to get out of one of the windows of the palace, after it was dark.

Upon hearing this faithful recital of his friend’s dearest secrets, it is hardly possible to be believed, but so it was, that Protheus resolved to go to the duke, and disclose the whole to him.

This false friend began his tale with many artful speeches to the duke, such as that by the laws of friendship he ought to conceal what he was going to reveal, but that the gracious favour the duke had shewn him, and the duty he owed his grace, urged him to tell that, which else no worldly good should draw from him:  he then told all he had heard from Valentine, not omitting the ladder of ropes, and the manner in which Valentine meant to conceal them under a long cloak.

The duke thought Protheus quite a miracle of integrity, in that he preferred telling his friend’s intention rather than he would conceal an unjust action; highly commended him, and promised him not to let Valentine know from whom he had learnt this intelligence, but by some artifice to make Valentine betray the secret himself.  For this purpose the duke awaited the coming of Valentine in the evening, whom he soon saw hurrying towards the palace, and he perceived somewhat was wrapped within his cloak, which he concluded was the rope-ladder.

The duke upon this stopped him, saying, “Whither away so fast, Valentine?” “May it please your grace,” said Valentine, “there is a messenger, that stays to bear my letters to my friends, and I am going to deliver them.”  Now this falsehood of Valentine’s had no better success in the event than the untruth Protheus told his father.