Explain the use of verbal irony in Jagger's opinion of The Spider(Bentley Drummle) as a husband for Estella in Great ExpectationsGreat...

When Pip is first invited to dinner, Mr. Jaggers asks Pip
who one young man is that is called "the Spider" and Pip tells him he is Bentley
Drummle.  Jaggers observes, "I like the look of that
fellow."

At dinner Pip meets Molly, the housekeeper, whose
strong wrists Mr. Jaggers is proud to display.  Then, toasting the young men, Mr.
Jaggers, who draws out the worst in people, says, "Mr. Drummle, I drink to you."  Pip
remarks that Mr. Jaggers follows Drummle with interest, noting the "boorish sneer of the
young man."

Later, in Chapter 48 of Great
Expectations, Pip again speaks with Mr. Jaggers who announces to him
that  Our friend the Spider,...has played his cards. He has
won the pool.”  This means that Drummle is going to wed Estella. Of course, using verbal
irony, Jaggers does not consider Drummle as any friend of his, nor of Pip, who is
clearly a rival.  Jaggers goes on to say that it will be a struggle of the strongest
between Drummle and Estella, suggesting that the Spider, who, he implies, has caught
Estella in his web, may dominate if he beats Estella.  This certainly is a case of
dramatic irony since Drummle does later do just that.