Jennifer Aniston angered by Courteney Cox-Arquette

According to a report in Sunday People, former "Friends" star Jennifer Aniston is perturbed at her BFF Courteney Cox-Arquette because she keeps playing matchmaker.
Courteney, 42, recently paired up singer Sheryl Crow with a new man, an LA power broker.

Jennifer, 37, is reportedly unsure about her relationship with Vince Vaughn, 36, and Sunday People reports that they have heard that Jen fears she may soon be single again. A pal is quoted as saying: "She wants a back-up plan. If Courteney keeps playing matchmaker, soon all of her A-list guy pals will be snatched up."

Also, Cox-Arquette gave an interview to Life & Style magazine in which she commented on the Vaughn-Aniston enagement.

Courteney told L&S, "No, she's not."

The magazine also will report in this Friday's edition that during Vaughn's recent work related trip to Las Vegas, Jen didn't accompany him or make it to his show like she did earlier in the year.