He is reading a french book so he can help Teresa with studying. After that moment in the classroom, he can't let Teresa. He buys the book and goes home to work on his French
He is trying to pronounce it, but it's hard for him too. He works on it for hours and hours a day. he knows that Teresa will ask him for help. It's been 3 weeks since he got the book and now he knows a decent amount of French.
Victor goes to Teresa's house and help's her with French. So far Victor is going well with his French that she will never know unless he tells. He helps her since there is a test coming up next week and Victor is prepared and Teresa is not, but with his help she will be fine.