"Recently, when Britney was having a sleepless night, she
decided to call Kevin at nearly 2 a.m. While they initially chatted about their
boys - Preston, 2, and Jayden, 20 months - the
conversation shifted. And as Britney hoped, Kevin knew exactly how to tire her
out - with hours of erotic talk! "They have phone sex often - at least
once a week," an insider tells Star. "The one thing those two have in
common is their need for sex, and after they get going, there are no holds
barred."