How RADICAL is this?

Okay...So, we have finished watching The Graduate with Dennis Hoffman. I thought this movie was interesting as it sparked my attention. It was made a while ago but still depicts the life of the youngster who thinks the mom is hot or vice versa. Dating the mom or a "cougar" seems to be radical enough to me. This movie reminds me of so many comedies that show a love story gone wrong. The guy gets the girl. loses her, then gets her back. However, when they are riding back on the bus, they both look in dismay. Did they really make the right choice? Something else I noticed....the father was more hurt about Benjamin having an affair with Mrs. Robinson than with her. That's radical because she came onto him.