Robert Pattinson Is "Desperate for Affection" from Kristen Stewart

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In real life, Bella and Edward's roles are reversed.

Insiders tell the new Us Weekly -- on stands now -- that Robert Pattinson is "desperate for affection" from Kristen Stewart. "He is always worried about her leaving him," a confidant of the 21-year-old actress tells Us.

"She will blow him off, and it makes him crazy," adds the friend. While Pattinson, 25, admits he's eager to settle down, Stewart is far from ready to walk down the aisle.

A friend of both the Breaking Dawn stars chalks it up to Stewart's youth: "Don't all people her age play games?"

For more on Rob and Kristen's tortured two-and-a-half-year romance, check out the new Us Weekly, on stands now.