It would have been very interesting to give Gregory three girls to worry about! Not that he appears that worried here. Yes he quotes a lot of chomsky and annoys his students with all that lefty nonsense but at heart he is still just an amiable dorky guy who just happens to have a thing for one of his students. Its played for laughs and its harmless. Or is it? I think its left up to the viewers to say whether he had sex with his student at the end. I think he probably did after they had settled down under the blanket and she called him by his surname, just like in his sex dream.