According to FemaleFirst, Simpson gets very jealous when it comes to letting her boyfriend, Pete Wentz, take pictures with fans of the opposite sex.
The 22-year-old singer kept her boyfriend, lead singer of the group, Fall Out Boy, away from the young groupies, when they were at Hard Rock Hotel in Chicago last weekend.
A witness told the New York Post, "When female fans tried to take their pictures with Pete, Ashlee got whiny and dragged him away."