Why do some men and women marry the one with whom they had an affair?

James and Judy could feel like they are in love. Or Jessica could feel that her first marriage to Jeff was a huge mistake. Jermaine could be in it for Jezebelle's money, while Jojo might be at peace that his love for Jemima won't last forever. And John could be desperately trying to deny his feelings for Jose, as he tries to have a heterosexual relationship with Jennifer.