Can anyone recognize the name of a French movie (70s-80s) about a teenager (name – Valentine). He liked to comb his mother’s hair and did it every day. When he met an older guy, who was also a criminal, he became distant and his mother noticed. Eventually he participates in some minor crime together with his friend, they are both caught, the police lets Valentine go. At the end his mother talks to him, and he refuses to comb his mother’s hair, because he feels he grew up.