“A woman notices her ex-husband drinking at the bar…” (joke)

A popular joke has a couple enter a restaurant. The wife appears to notice her ex-husband—from seven years ago—drinking at the bar. “That’s crazy,” says the new husband. “No one celebrates that much!”
 
The joke has been cited in print since at least 1999.
 
 
Google Groups: alt.fan.mark-brian
Jokes for 8/25
Dave Marron
8/25/99
The Smiths were dining out when his wife noticed a familiar face at the bar.
“Honey,” she said as she pointed the guy out, “that guy at the bar has been drinking like that since I left him seven years ago.”
Her husband said, “That’s silly, no one celebrates that much.”
 
Google Groups: eunet.jokes
Ex-husband at the bar
Mr Funny Bone International
12/28/01
The Smiths were dining out when his wife noticed her ex-husband at the bar.
“Honey,” she said as she pointed the guy out, “that guy at the bar has been drinking like that since I left him seven years ago.”
Her husband said, “That’s silly, no one celebrates that much.”
   
Google Books
Torah with a Twist of Humor
By Joe Bobker
Jerusalem, Isarel: Devora Publishing
2004
Pg. 182:
The Rosenbergs are out celebrating when the wife notices a familiar face at the bar.
 
“Honey,” she says to her husband, “See that guy over there at the bar. He’s been drinking like that ever since I left him seven years ago.”
 
“Don’t be silly,” he replies, “No one celebrates that much!”
 
Google Books
Bust Your Gut Joke Book:
101 Outrageous Laughs!
By Charles C. Costa
Bloomington, IN: AuthorHouse
2013
Pg. 32:
Drinking Ex-Husband
The Smiths were dining out when his wife noticed her ex-husband at the bar.
 
“Honey,” she said as she pointed the guy out, “That guy at the bar has been drinking like that since I left him seven years ago.”
 
Her husband said, “That’s crazy, no one celebrates that much.”
     
2 March 2017, The Advertiser (Adelaide, Australia), “The Last Word” by Marty Smith, pg. 18:
Laughter is the best medicine: A husband and wife are eating out when she notices an old friend at the bar. “Honey”, she says to her husband as she points out the friend, “that guy at the bar has been drinking like that since I left him seven years ago.” Her husband says, “That’s silly, no one celebrates that much!”
   
Reddit—Jokes
A married couple was eating at a restaurant
submitted July 31, 2017 by _Underwhelmed
when the wife noticed her ex-husband sitting at the bar. “He’s been drinking since I left him seven years ago” she said to her current husband.
“That’s silly, dear” he replied. “No one celebrates that much.”