Dialogue and Internal thoughts can tell the reader how a character is feeling or reacting to a situation or situations, he/she is put in.
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 king ending is affective in a way
I would agree with you - the conclusion should leave readers with an important thought at the end.
This thought should never be new, or opposing to the previous ideas you had been writing before. It also shouldn't be confusing, but quite conversely - it should explain everything and put everything in place.