The grammar Nazis will hate me for this but I'm going with "A friend of mine and my wife's" as the least horrible way of saying it.
"A friend of mine booked a table..." - all good
"A friend of my wife's booked a table..." - yep - and check here if you don't like "wife's": https://forum.wordreference.com/threads/a-friend-of-his-wifes.2438592/
"A friend of my wife's and mine booked a table..." - nope
"A friend of mine and my wife's booked a table..." - works for me
The grammar Nazis will hate me for this but I'm going with "A friend of mine and my wife's" as the least horrible way of saying it.
"A friend of mine booked a table..." - all good
"A friend of my wife's booked a table..." - yep - and check here if you don't like "wife's": https://forum.wordreference.com/threads/a-friend-of-his-wifes.2438592/
"A friend of my wife's and mine booked a table..." - nope
"A friend of mine and my wife's booked a table..." - works for me