CATS, Harold & Maude is the story of a young man who develops a crush on a much older woman (he's about 18, she's in her 70's). It was a movie in the early 1970's starring Ruth Gordon. In 1980, it bombed as a play on Broadway.
In my opinion, Gordon's talent is the only reason that the movie sold more than 2 tickets. The film is a black comedy and developed a small cult following, but the younger man-older woman theme had already been explored a few years earlier in "The Graduate" with sexier stars and better music.
It's really one of those shows that should be playing in an off-Broadway theater (Back in the days when off-Broadway meant you were going to see something quirky and different. Unlike today's off-Broadway, which is just a NYC try-out for a Broadway production. But that's another thread).
If anyone ever tells you that you put too much Parmesan cheese on your pasta, stop talking to them. You don't need that kind of negativity in your life.