It's quickly dawned on Robert Pattinson that there's a downside to being the most wanted sparkly vampire on the planet. The New York Daily News says the sought-after "Twilight" star is homesick for London (and perhaps maybe-honey Kristen Stewart) after being besieged by adoring and handsy female fans while filming "Remember Me" in Manhattan. "Robert is dying to get back home," says a source. "He's so over everything. He's overwhelmed by all the girls -- they terrify him! He says girls grab his neck and clothing all of the time, and he's not used to that. Fans don't do
that to him in London. Everyone there is a little cooler about the fame thing, which is what he's used to." The mole adds that the actor is perplexed by the frenzy. "Robert doesn't understand why everyone is going so crazy over him," explains the mole. "He's embarrassed by the way girls throw themselves at him ... He's afraid that if he gives a hand, they'll take the whole arm. He's being advised by security not to encourage the crowd, so he doesn't even look up anymore."