This film was about a girl who already had boyfriend but in the same time had affair with her art teacher. The art teacher had wife and daughter.

I remember a detail that the man asked the girl to take off her clothes so he could draw a painting of her. He covered the painting up in order to hide his wife. The wife eventually found out, and the girl was also fed up with that guy.

I saw the film was shown on HBO or Cinemax, at the time of 2007 or 2008, kind of in the middle. Please tell me if you know that film.