So - with the Grease bit where the boys asked "did she put up a fight."
Are people really unaware that this isn't meant to be a sentiment the viewer admires?
The whole idea is the boys are immersed in this macho and reductive idea of women that sees them as a sexual object rather than a person.
The girls on the other hand see the boys as a kind of status symbol and made up romantic hero.
Neither is accurate or really anything to do with real people or who they really are, or the real relationships of the characters. They do, however, continuously get in the way of their happiness or a chance of relating to each other honestly.
And they do really like each other, you can see that throughout the film, Danny and Sandy have a real connection and affection, and so do Rizzo and Kenickie for that matter.
It's a romance, in the sense that things all unrealistically turn out ok and happy - so they all get over those things and manage to live authentically, seeing each other as real people. Which doesn't mean being a joke or a greaser or any of those things which are irrelevant, which is why Danny can get his letter sweater and still be himself, and Sandy can wear tight pants.
To a lesser extent the other characters like Frenchie do the same thing.
I hate to have to look that hard at a film like Grease which is meant to mostly just be fun, but it drives me a little crazy that people miss the parallel character development that subverts the categories they started with. Or thinks that just because a character says something it's meant to be a good idea.