Love's Labour's Lost
How we cite our quotes:
NATHANIEL: [Reads] 'If love make me forsworn, how shall I swear to love?
Ah, never faith could hold, if not to beauty vowed!
Though to myself forsworn, to thee I'll faithful prove; (4.2.34)
Berowne is worried that Rosaline will accuse him of being incapable of fidelity, since he broke his vow. But for him, it's about priorities – he has to break that vow to make one to her.
KING: And Jove for your love would infringe an oath.
What will Berowne say when that he shall hear
Faith infringed which such zeal did swear? (4.3.38)
The King uses Berowne's razor-sharp wit as an intimidation tactic.
Let us once lose our oaths to find ourselves,
Or else we lose ourselves to keep our oaths. (4.3.93)
Again, Berowne argues that they have more to gain from breaking their promise (which he thought was crazy from the beginning) than keeping it.