Rosalie became a vampire after she was nearly killed by her then fiancé and his friends. She goes on to pair up with Emmett, whom Carlisle turns into a vampire after he was mauled by a bear.
Since Alice can see the future, she knew she and Jasper would be together before they actually were.
Carlisle, whose physical age is 23, is technically with an older woman, since wife Esme became a vampire at 26.
Bella and Edward get playful as they get to know each other in the first movie.
The Cullens fool everyone at high school into thinking they're adopted brothers and sisters.
Laurent stands between Victoria and her lover, James, a tracker vampire who goes after Bella in Twilight.
Edward and Bella share a magical moment at prom, although they're not your typical high school students.
Twilight also has its share of human couples. Bella's classmate Jessica Stanley eventually snags her crush Mike Newton, who likes Bella first. And Ben Cheney and Angela Weber go strong throughout.
Wolf-pack leader Sam Uley ends his relationship with Leah after he imprints on her cousin Emily. Sam accidentally scars Emily's face when he phased into a werewolf, but she never resents him for it.
Emmett and Rosalie and Carlisle and Esme pair off in this scene from New Moon.
After Edward leaves Forks in New Moon, Bella and Jacob start to grow closer.
After punching Jacob the first time he tried to kiss her, Bella begs him to kiss her toward the end of Eclipse. Jacob does, but when her vampire fiancé finds out, Bella tells Edward she loves him, not Jacob, more.
Rosalie found her future husband, Emmett, right after he was mauled by a bear. She wouldn't turn him into a vampire, but Carlisle did after she carried him 100 miles.
Carlisle and Esme share a serious moment in Eclipse.
The patriarch of the family, Carlisle protects his wife, Esme, during a dangerous moment in Eclipse.
Carlisle created all the Cullens besides Jasper and Alice, who found Carlisle on their own once they were vampires.
The Cullens aren't the only vampires we meet. The Denalis coven are considered cousins of the Cullens, since they too eat animal blood instead of human. Eleazar and his mate Carmen are amongst the Denali couples.
Once they married in Breaking Dawn Part 1, Bella and Edward were free to get busy between the sheets.
Edward and Bella looked happy on their honeymoon in Breaking Dawn Part 1.