What was an important event/thingin the book Bruiser by Neil shusterman that happened it Chapters 1-3

In Chapter 1, Tennyson learns at dinner that his twin sister, Bronte, plans to go on an afternoon date with Brewster Rawlins, an antisocial boy from their school who was once voted most likely to receive the death penalty. Tennyson is unhappy with this situation and schemes to ruin the date.

In Chapter 2, Tennyson takes his girlfriend, Katrina, to the same miniature golf course where Brewster has taken Bronte on their date.

In Chapter 3, when Tennyson and Katrina catch up to Brewster and Bronte, Tennyson manages to get Brewster alone where he threatens him, promising bodily harm if he touches Bronte. Brewster and Bronte leave.