According to The Guardian:
For years, men have enjoyed ‘sorbet sex’ as a way of cleansing their palates between long-term relationships, but now women are joining the feast.
I’m interested to know whether sorbet sex is a well recognized phrase in the U.S. and in the U.K., and, if not, I would like to know what expression is used to refer to a casual sexual relationship undertaken between two serious relationships.
The journalist, Beverley D’Silva, says that the expression is a phrase used in Sex and the City, but Wikipedia’s “Sex and the City” page says nothing about that.
Dictionaries I consulted don’t have an entry for sorbet sex.