He had long planned to do this, as was earlier revealed in I.ii. Hal says explicitly that he is only behaving so badly in order to make his eventual reformation more impressive.

"So when this loose behavior i throw off / and pay the debt i never promised...."

In this line he refers to his relationship with

For my part, if a lie may do thee grace,

"I shall hereafter, my thrice gracious lord,

Hal talks of Falstaffs need for the recognition of having killed Hotspur. Other than attempting to prove his lie false, as he may have done at the beginning of the play, Hal accepts that Falstaff needs to lie in order to make himself look better and feel better about himself. Although Hal comes to these realizations, their friendship does not end on a bad note. Hal's transition unknowingly led them down different paths.

Some common words found in the essay are:
Iii212 Paragraph, John Falstaff, Prince Wales, Iii Hal, Henry IV, Royalty Introduction, play hal, hal prince wales, Hal Prince, hal prince, prince wales, destined position,
Approximate Word count = 844
Approximate Pages = 3 (250 words per page double spaced)