I don't know... from the marketing I've seen for The Hunger Games there is practically ZERO romantic plot. It's almost being sold like a sort of sci-fi combination of two short stories I was forced to read in middle school: "The Lottery" and "The Most Dangerous Game".
I can't read, but Hunger Games looks like a cross between The Lottery and The Running Man.
Hah! It looks like we had the same idea!
Oh, there's a bit of a romantic sub-plot... but it doesn't play into the story as much as what Twilight appeared to.
What I'm referring to by merchandising, I mean shirts, action figures, trinkets (including pins, bracelets, dog tags, etc.), along with the massive social media push (there are, I believe, 14 different official Facebook pages), the blasting of the marketing... the only thing I think is missing is a fast food tie-in... which, you'd think would be a given...
As for the plot of the books, the first one starts off with an interesting twist on the survival "Dangerous Game" theme by tying it into the "reality TV show". Unlike previous stories that have done the "death show" idea, this one does it a bit differently by A) The use of the games as government propaganda and B) instead of the idea of just being on TV, the *FACT* that it's on TV plays a big role in how everything plays out. It's not "Oh, hey, this'll be on TV" and occasionally talk about a camera or something. The whole idea that the tributes (in particular, the one we follow) have to play for the camera while trying to survive. This takes a bit of a back seat in the second story, as it sets up more of an anti-government theme, while the third book ties the two together, not only showing the extremes of propaganda, but giving an anti-government theme while also questioning the anti-anti-government.

If you think the books are simply Smash TV: The Novelization, I assure you, they're not.