Nikki Reed covers the December/January issue of Seventeen magazine where she says that the Twilight cast didn't always get along in the end.
"...in the beginning, it was innocent and fun, and we were like one big happy family. It was like being at sleepaway camp."
"Success came along and changed the dynamic," Reed says. "We're not all best friends, and we're not all going to hang out together after the final movie is done."
Nikki plays Rosalie Hale, a vampire in the series.
"Attachments grow when you're working with the same people for so long. People are friends, people fall in love, people get in fights. We're not all robots in that way. Sure, things have gone on, and it's weird to have them be in the public eye."
As for Nikki's real life, she just got hitched in October to former American Idol contestant Paul McDonald.
The December/January issue of Seventeen is on newsstands now.