Watching TV with her husband a documentary about "Dogging" came on and much to her surprise she felt compelled to watch it fully, but a while after she became curious about the subject and wanted to know more.
Eddie was having sex with Gloria's daughter. When he and the daughter broke up, he decided to pursue Gloria. Over many years, this relationship was intermittent. Unable to be together in society, due to age gap, they still professed true love.
A little wishful thinking about a mistreated wife, a jerk husband and a hero (well maybe not really a hero). Hard to get your tongue out of your cheek with this one.