In The Great Gatsby, why does Gatsby think Daisy didn't enjoy the party?

It is at the end of Chapter Six, at the close of yet
another of Gatbsy's riotous parties, that Gatsby speaks to Nick and shares his
conviction that Daisy "did not like" his party. We are not told directly why he thinks
this, but we are left to infer that his belief that she did not like it is based on the
outcome of the party. Note the following paragraph that Nick tells
us:

He wanted
nothing less of Daisy than that she could go to Tom and say "I never loved you." After
she had obliterated four years with that sentence they could decide upon the more
practical measures to be
taken.

Because the party had
not culminated in this statement and happy ending for Gatsby, he therefore believes that
Daisy hadn't enjoyed it, which plunges him into the depths of depression as he begins to
feel distant from her. The fact that Gatsby says that Daisy did not like the party
perhaps says more about him, therefore, than it does about
Daisy.