Movie about a teacher and a blond student in his class

There is this male teacher that has a real crush on a blond female student.

I can remember how he sits across her and put his hand on her knee, she let him for a couple of seconds and then takes his hand and drops it next to her.

There was also a scene where he jerks off to her homework and give it back to her with a stain on it and she looked at him weird

Then the teacher goes to another city or town and there was this scene in a jacuzzi with other people

THANK YOU FOR HELPING!!