Well, in that hit you miss. She'll not be hit
With Cupid's arrow. She hath Dian's wit,
And, in strong proof of chastity well armed,
From love's weak childish bow she lives uncharmed.
She will not stay the siege of loving terms,
Nor bide th' encounter of assailing eyes,
Romeo's whining about Rosaline's celibacy, but that's not the interesting part. The interesting part is the way he goes about describing love and sex with the language of hunting and battle. Rosaline, he says, won't be "hit with Cupid's arrow" because she's "well arm'd" against his romantic advances. (Romeo also compares Rosaline to Diana, goddess of hunting and of chastity.) Romeo's sexual advances ("loving terms") are also likened to a "siege" (an attack). This conceit (elaborate metaphor) is pretty typical of romantic poetry. Compare Romeo's lines to the following love poem from Edmund Spenser's Amoretti, a collection of poems first published in 1595. (Psst. It's NOT about deer hunting.)
Like as a huntsman after weary chase,
Seeing the game from him escap'd away,
Sits down to rest him in some shady place,
With panting hounds beguiled of their prey:
So after long pursuit and vain assay,
When I all weary had the chase forsook,
The gentle deer return'd the self-same way,
Thinking to quench her thirst at the next brook.
There she beholding me with milder look,
Sought not to fly, but fearless still did bide:
Till I in hand her yet half trembling took,
And with her own goodwill her firmly tied.
Strange thing, me seem'd, to see a beast so wild,
So goodly won, with her own will beguil'd. (Amoretti LXVII)