In the Twilight books and movies, the Cullens are “good” vampires. They dress nice, have a great house and respect humans. Edward Cullen nobly chooses to refrain from sexual activity with Bella until they get married.

In “The Twilight Saga: Breaking Dawn, Part 1,” they get married. (Beautiful wedding, by the way.) So now here comes the skinny dipping and the rough sex. Nothing too graphic is shown, but there may be enough to cause concern among moms of young girls.

Up to now, their romance has been relatively chaste. In “TTSBDP1,” Bella wakes up on the morning after with bruises. You’ve allowed your 12 or 13-year-old daughter to see what came before. Will you allow her to see this? Or will you take her with you? Women of all ages are among those who love this whole saga.

Apparently Edward’s family never taught him about contraception. Which is actually a good thing. Had he used a condom, we wouldn’t have the main part of this story, which is Bella’s pregnancy.

Without spoiling too much, let’s just say that the birth of this child is not a neat and easy delivery. No, it’s bloody, messy and violent. After they clean her up, she’s a good-looking baby. Sadly, she is saddled with the horrible first name Renesmee. (Good luck surviving grade school with that name, kid!)

If you are deeply involved in the books and movies, you will appreciate the film depiction of Jacob’s “imprinting” on Renesmee. You will also appreciate the final shot before the credits roll.

If you’ve seen the other three Twilight movies, you are pretty much obliged to see this one, right? Should you go on opening weekend, be aware that many showings are already sold out.