Dylan/Hallie Fight

From Rom Com

Dylan and Hallie have an unsatisfying phone conversation, in which he seems completely non-perturbed and in which she is obviously upset, but he doesn't really notice.
Hallie wants to attend the party, which is hosted in the area near Rackham. But Dylan is busy (at this point with Aimee, I think, and maybe Nick, because this would be a good time to introduce Nick's car). Dylan doesn't seem to care that much about Hallie, or rather he is pre-occupied.
Dylan tells Nick to go to the party so that Hallie won't be lonely. He's got his own things to do. Perhaps he is watching "The Twilight Zone" or fishing.