What do the last few sentences in Chapter 2 of The Great Gatsby mean?It just doesn't make sense as of why these sentences would be in the story,...

I like the first answer for as far as it goes (especially
in reference to the portfolio and the titles of the photographs). However, I think it's
also important to remember that Nick is writing a novel about his experiences, so his
use of ellipses is his novelistic technique, not just Fitzgerald's.
Nick might have used the ellipses to indicate his drunken state, but if that's the
reason, why didn't he use ellipses earlier? Nick was drunk earlier in the evening, too,
and yet, this is the first place where he uses
ellipses.

Some critics suggest that Nick uses ellipses to
indicate a possible intimate homosexual encounter between Nick and Mr. McKee, who he
earlier described as a "pale, feminine" man who is uninterested in his wife. Also, it
might be helpful to remember that Nick is obsessed with the spot of dried lather on Mr.
McKee's cheek and eventually takes out his handkerchief to wipe it off when Mr. McKee
fell asleep on a chair. Mr. McKee invites Nick to lunch when they are taking the
elevator from Myrtle's apartment. I think drunkenness does not fully explain these last
lines, in which Nick specifically explains that Mr. McKee is "sitting up between the
sheets, clad in his underwear." Mr. McKee's near nakedness and the two men's location in
the bedroom suggests something quite intimate has occurred. Also, Nick's use of ellipses
to leave out details suggests he may be trying to avoid something: his relationship with
Mr. McKee, the events of the evening with Mr. McKee after he leaves Myrtle's apartment,
or perhaps just his own drunken behavior.

This is a great
passage! Thanks for asking such a good question.