Courtney Cox and Brad Pitt were very friendly to one another at a Chris Cornell concert on Sunday night. Yeah, so what—but this is sort of an interesting move on Courtney’s part seeing as Jennifer Aniston is her best friend, and Brad Pitt is her cheating ex. Wonder where Angelina Jolie was?

more Courteney Cox photos after the hop…

Page Six, of course, was the one to blow the whistle on this little union. This is what they had to say:

Cox, who is supposedly best pals with her former “Friends” co-star Jennifer Aniston, was spotted chatting with Aniston’s ex-husband Brad Pitt at a concert Sunday night. Cox was at the Wiltern Theater in LA with husband David Arquette for the final stop on rocker Chris Cornell’s Scream album tour when Pitt showed up. Our backstage spy told us, “Instead of ignoring him, Courteney chatted away with Brad all night. The three were in great spirits and seemed really happy to see each other.”

Uh oh. Court better hide from the wrath of Aniston. If Hollywood is high school for adults, then Courteney will wake up to her house TP-ed tomorrow…