It is rude to ignore people at an event.
Lance got into an argument with his friend Brock before the party.
Lance wants to enjoy the party.
Lance talks to Brock at the party to try and get over the argument.
Lance ignores Brock so that he can enjoy the event without him.
Lance makes up with his friend at the party, and they have a good time.
Lance enjoys the party but is still upset with Brock.