Jim hears some music from the neighboring dance hall and asks Laura to dance. Even though she protests that she can't, Jim insists and during the dance, they stumble against the table and they break the horn off the unicorn. Laura maintains now that it is like the other horses. Jim tries to tell Laura how different she is — that she has a charm that is as different as "blue roses." He then says that someone should kiss Laura, and he leans over and kisses her. Almost immediately he knows that he has done the wrong thing, and he tells her that he shouldn't have kissed her because he is engaged to be married in the next month. After he finishes with his explanation, Laura gives him the broken unicorn. At this point Amanda enters with a pitcher of lemonade. After flitting about and chattering, she is about to leave when Jim explains that he has to go because he is engaged. Amanda is surprised and says that Tom didn't tell them that Jim was engaged. Jim explains that no one knows it yet, and then he leaves.
Amanda then calls Tom and accuses him of playing a joke on them by bringing home an engaged man. Even though Tom protests that he didn't know Jim was engaged, Amanda refuses to believe him. She holds Tom responsible for all of the expense involved in entertaining the gentleman caller and tells Tom that he is a selfish dreamer who never thinks about his "mother deserted and an unmarried sister who's crippled and has no job." So Tom does leave. But as the scene closes, Tom says that even though he left, he could never forget his sister. Wherever he goes, he still thinks about her.
