Fred/George is a kept man as he is a writer who hasn't been published in years and has a "patron" - story line has him tossing the patron (and actually working and being published again) when he thinks he is in love with Holly
Holly is trying to marry into money, but is it because she is afraid of love or is it the best resort she sees, a combination of both? Running from herself and a fear of love? Love is an incredible strong emotion and does/can leave one vulnerable
I don't think Holly knows who she is (I think she admits as much or she doesn't know what she wants) and that is part of the internal conflict
Funny thing is I don't consider Breakfast a great movie but enjoy Hepburn's performance and the feel of the movie
60's cocktail parties have an immense appeal and a swinging groove