I dont remember much but I remember this movie wasnt in English, maybe German or Russian if I had to guess. But this boy sees a girl in a crowd of people watching a fight. Later he finds her on Facebook and looks at all her pictures. Sometime in the middle they go to a dance and have a moment but a gang of bullies hassle them. In a different part he ends up going to her house to escape the bullies and when he has to go they kiss in the hall. Toward the end they spend the night together and in the morning the mom sees her in his bed then crys a little in the living room.
Thats all I remember right now and if it helps the mom is divorced and we dont see the dad.