S8, EP22 "The Proposal"
Geoff shares with the JTP that he is planning on asking Erica to marry him and gives them the engagement ring for safekeeping.
S8, EP21 "Alligator Schwartz"
Erica fears that Geoff has moved on from their breakup; once Adam recalls his pact with Dave Kim, where neither will attend prom if they don't have dates, Adam decides to find Dave a date.
S8, EP20 "Poker Night"
In order to take her mind off of her heartbreak, Erica takes a trip to Los Angeles to see her best friend; after getting caught taking part in an underground poker game, Adam gets sentenced to Pop-Pop duty, which turns out better than expected.
S8, EP16 "Couple Off"
When Barry and Joanne crash Erica and Geoff's peaceful weekend camping trip, they end up in a competition to see who is the better couple; Adam seeks to prove to Brea that he doesn't have an easy, privileged life.
S8, EP11 "Quaker Warden"
A sentimental Beverly decides to get more involved at Adam's school, much to Principal Ball's dismay.