Word is that Zac Efron, 19, has broken up with relatively longtime girlfriend Vanessa Hudgens (two years! which is like married in teen time) and fallen for his Hairspray costar Nikki Blonski, 18. They’ve been inseparable for weeks, spending quiet time together in New York and LA and talking on the phone and texting when apart. Favorite topics? Politics and global warming. Believe it! A source close to the dreamy manchild sounds like a teenage girl when she breathlessly relates (with all kinds of implied exclamation points and italic) that, “Zac said they’ve made out. And that Nikki’s a great kisser. He also thinks she’s very sexy and admits he doesn’t even notice she’s carrying a few extra pounds. Zac and Vanessa used to argue a lot. They were jealous of each other. But Zac says Nikki is totally understanding and accepting of his popularity and isn’t threatened by it.” (Crazy Days and Nights, with interesting comments, via dlisted)