... yeah, no.Every piece of media is a sermon on something.
given your name, I assume you are a woman you ever dealt with dogged "nice guys" who think love is earned or entitled? it is one of the largest transmission vectors as it existed for decades it basic formula spreads that idea, watch them again with this in mind and you will see.
I know a surprising amount about the nature of love despite lacking the ability to truly feel it as it can only be given.
Take a look at Deathstalker, sometime, or pretty much any action or action-fantasy or really any kind of movie from Big Trouble in Little China on down to Zoolander and you'll see guys getting girls just "Because" especially in the Comedies. Romcoms are not responsible for "Nice Guys".
Heck, in -many- movies before 2000 grabbing a woman and forcing a kiss onto her was considered "Romantic" or "Hot" rather than sexual assault. INCLUDING Big Trouble in Little China. Remember Revenge of the Nerds where Lewis Skulnik commits rape by fraud and it's lauded as heroic and romantic? Where the victim is just surprised he's so good at it and he replies that jocks have sex but nerds -think- about it and that makes them better at it? Yeeeeeah... That kind of drivel is where it's from.
Further: Guys tend to avoid Romcoms as "Chick Flicks". Or, at least, did in the 80s and 90s and early 2000s. My social circle of guys shrank a bit after that point.
Nah. The idea that love is earned through a single romantic or important act doesn't come from Romcoms, where they characters flirt and interact for the majority of the runtime. It comes from "Save the World, Get the Girl" mindsets. One big gesture and then you're in a relationship forever.