Boy and girl study together in a bus and her house unaware of being to

Please help me find this movie Probably an italian movie in which a boy and a girl study togther just before the exam in a bus and her house,eats together but not knowing that they are together.

Its a old movie and in one scene when the boy and girl go to her house for study as exam is 8 hour late, they met with fews dogs and buy trick them to run away

Hold old do you think this movie is (in years)? What do you mean by saying that they study together but they don't know, that they're together?