Though they've both moved on since their 2009 split, Jennifer Aniston still can't stand her ex-boyfriend John Mayer!

In his new book, Superficial, Andy Cohen recalled an "awkward" run-in between the former couple at an LA restaurant earlier this year.

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John, 39, and the Bravo host, 48, were catching up over drinks at Sunset Tower in late January when they realized Jen, 47, was dining with her former Friends costars Courteney Cox and Lisa Kudrow at a table nearby.

jennifer aniston john mayer getty images

Jen and John in February 2009.

"[I] began asking John when was the last time he saw Jen, how awkward this was, and if there were ways I could make it more awkward," Andy wrote in his memoir, according to RadarOnline. "We realized they had to walk by our table to leave and that would be a 'moment.' We wondered if it was more fun at our table or theirs."

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When they were ready to leave the restaurant, Andy told John he was going to say hello to Jen and her group — and suggested the singer come along. "He told me with a look that the Queen of Smartwater would not be having it," Andy wrote. John left the restaurant without uttering a word to his ex-girlfriend.

Jennifer — who is now married to Justin Theroux — and John previously dated from 2008 until 2009.