In the first scene, everyone comes into class, and it's soon going to begin.
A couple of minutes into the class, everyone begins to receive and email. All you hear around the classroom is "Ding, ding ding.." and so on. Everyone opens it and it's a picture... a picture of Hannah. And it's sent from Justin...
In the last scene, Clay finally receives it and is in shock, he is disappointed and speechless. He looks at Hannah very disappointingly. Hannah is surprisingly the last one to receive it, she starts bursting into tears and runs out the classroom.