Why do women defend their loser boyfriends and husbands?

Anonymous
Even though they know that they aren't good husband or boyfriends. My sister talks great about her husband yet he's not a good husband. He's an alcoholic and a cheater. When she talks or comments about him I just stay quiet. He's an okay dad as I know he loves his daughters but still is not a good example for them. I have noticed this trend in other women defending their boyfriends or husbands from other women speaking out about how much of a cheater and liar heir partners are. To the death they defend them. The man doesn't have to say or do anything because the wife or gf is always at their defense.
Why do women defend their loser boyfriends and husbands?
4 Opinion