(CNN) -- In the three years since "Twilight" bowed in theaters, we've learned a few things: One, while teen girls are a sizable portion of the fan base, they're not its totality. Two, the first three films of the franchise have pulled in roughly $1.8 billion worldwide in ticket sales (not adjusted for inflation), according to BoxOfficeMojo.com. That's apparently enough for Robert Pattinson, who stars as Edward Cullen, to talk of being able to afford to fail, and his co-star Kristen Stewart (Bella Swan) of donating some of her "funds." Three, there must be a just a teeny tiny footnote on each installment's budget for Taylor Lautner's wardrobe, because rare is the moment when the kid isn't walking around without a shirt.
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"The Twilight Saga: Breaking Dawn -- Part I" opens in theaters today
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The supernatural romantic series has plenty of tongue-in-cheek lessons
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"Twilight" shows how a partner's eccentric qualities just spice the stew
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Need to juggle two lovers? "Twilight" is a great teaching tool
Yes, his senses are attuned to the scent of human blood, but you're missing the point: @placeholder's smelled special, like his "own personal brand of heroin," as he memorably says in the first film.