HELP!! in the poem "Sonnet 130" by William Shakespeare What event,observation,feeling,memory,experience oroccasionis being recounted or described in

HELP!! in the poem "Sonnet 130" by William Shakespeare What event, observation, feeling, memory, experience or occasion is being recounted or described in this poem and who is the speaker and how do they feel about the subject they are exploring in this poem? 

what words or phrases are used to clearly portray the speaker's feeling?

and what is the purpose of this poem? 

what expression or statement is being made? What dynamic elements are used to make the purpose clear? Where is the poem most powerful? please explain and help me understand.