Dex develops a friendship with Jeff 's ex-wife ( and Blake 's daughter ) , Fallon .
Dex has been casually involved with Leslie Carrington , but their relationship ends when Leslie has a fling with Jeff Colby and goes to work for Alexis .
Dex develops a friendship with Jeff Colby 's ex-wife ( and Blake 's daughter ) , Fallon .
Dex has been casually involved with Leslie Carrington , but their relationship ends when Leslie has a fling with Jeff Colby and goes to work for Alexis .