The Adventures of Tom Sawyer Chapter 7
Tom, bored, begins running his new tick back and forth across his slate with Joe Harper. The schoolmaster sneaks up behind them and whacks them on the shoulders. At lunchtime, Tom and Becky meet secretly back at the school instead of going home. Tom shows Becky how to draw for a little bit. Tom asks Becky if she likes rats, but she doesn't. They share some chewing gum, talk about the circus, and then Tom asks Becky if she wants to get engaged.
"You only just tell a boy you won't ever have anybody but him, ever ever ever, and then you kiss and that's all. Anybody can do it." Chapter 7, pg. 49
Tom whispers to Becky that he loves her, and convinces her to do the same. He begs her to kiss him and she does. Tom tells her she must promise herself to him forever, but then accidentally tells her that he was engaged to Amy Lawrence. Becky, shocked, begins to cry when she realizes that he's been engaged before. He tries to offer her his prized brass knob, but she pushes him away and knocks the knob to the floor. Tom storms off and Becky, after calling for Tom to come back, is left to hide her heartbreak from the rest of the class.