The poet, distanced (at least emotionally) from the person of his desire is racked with the suffering of an addict in deprival. He recognizes that his feelings are illogical to the point of madness. They have caused him to perceive that unsavory person as highly attractive.
sonnet 18
i
Iambic pentameter.
sonnet
fickle.
It makes fun of the blazon and exaggerated comparisons of beauty.
Probably either Sonnet 18 ("Shall I compare thee to as summer's day") or Sonnet 116 ("Let me not to the marriage of true minds admit impediments")
Sonnet LXXIII deals with decay as one ages, and how love is greater when it loves that close to death.
This line from Shakespeare's Sonnet 116 means that true love should not be hindered by any obstacles or challenges. It emphasizes the idea that genuine love is constant and unchanging, despite difficulties that may arise. It asserts the belief in the endurance and purity of true love.
There aren't any. This sonnet is a metaphysical poem, in the style of Donne and his contemporaries, which becomes evident in the first line, "My love is as a fever." This is not a pun, merely a simile. The poem continues with the conceit of comparing love to illness.
Yes, the correct rhyme scheme for this stanza in Shakespeare's Sonnet 18 is ABAB CDCD EFEF. The stanza you provided does not follow this pattern.
sonnet