They share scenes in New Moon and now in The Runaways, but Kristen Stewart and Dakota Fanning also share a smooch in the new flick! "I don't want to give anything away," Kristen tells Access Hollywood about the kiss. "It's a really passionate, hardcore scene. No, it's just a kiss. It's not a really big deal." Whoa! "It's just something that happened in their lives," Dakota says. "In this script, it's not like a big build up or something that they talk about afterwards." That's rock 'n' roll for ya.