I just noted something about the Ringo record scene...
When the film starts, Tom is like: "I don't know what happened, everything was going great", and he actually remembers a moment when he shows Summer a Ringo record and she smiles. However, when the film is about to end, we see the whole scene and realize that it was just a polite smile, and Summer actually changed her expression into angst quite fast.
I don't know, I haven't noticed this before and just thought of sharing it here.