Answer:

exes

Answer	Crossword Clue
EXES	"The First Wives' Club" members
EXES	Former mates
EXES	Former partners

EXES	Kisses, symbolically
EXES	Marla and Ivana, e.g.
EXES	Unpaired pair
EXES	People who might not get invited to the same parties
EXES	They've split
EXES	Former flames
EXES	Past partners
EXES	Palimony recipients

EXES	Former spouses
EXES	Old flames?
EXES	Unhitched mates
EXES	Partners no more
EXES	Spouses no more
EXES	Flames no more
EXES	Splitsville residents?
EXES	People decoupled

EXES	Lovebirds no more
EXES	They may have joint custody
EXES	Divorcees
EXES	Custody battlers, often
EXES	Ones released from an institution?
EXES	Custody sharers
EXES	Some court opponents
EXES	They're no longer together

EXES	Old flames
EXES	Old mates
EXES	Onetime spouses
EXES	Some apartment hunters
EXES	Some personal ad writers
EXES	Splitsville "residents"
EXES	Spot markers
EXES	Palimony payers

EXES	Some dating service applicants
EXES	Previous partners
EXES	Some singles bar frequenters
EXES	They're broken up
EXES	Union busters?