Explanation:
the rhyme scheme is ababbcbccdcdeeabbacddceffegeabcabcdcddcdee
the main idea lasting love hope madness
this is written in the Petrarchan English italian form
The poet has used the metaphor simile personification of burning an oak to emphasize how patient one needs to be when trying to win the love of a lady. He also uses the metaphor of the knot wound pain to emphasize the depth of love.
I think the answer is that Sylvia is experiencing falling in love. She is extremely attracted to the hunter, and might be actually falling in love with him, but the important thing here is that she doesn't follow her physical attraction, she follows her philosophical learnings.