How can a woman have so much power over a man?

Anonymous
I'll give you a brief example:
I know of a story from my workplace. It happened to a guy many knew; decent fellow. He fell in love, went against his mother whom never liked the girlfriend and it got to the point the girl made him rob a store, steal drugs and punch a homeless guy a couple times. She was the mastermind (the manipulator) and he was just following through, saying yes to everything.

Then after serving his 3 year sentence (prior to that he never got in trouble with the law ever), he found out he's not the father of their 6 year-old son, she cheated the whole time, she tried to falsely accused another man of sexual assault (by hitting herself and ripping her clothes; luckily it didn't work), she only mimics emotions and other things. She admitted to using people since she was a kid and never feeling any guilt nor remorse; a pure psychopath.

Even though he started out as a normal, gentleman... how on earth did he not notice the red flags? How can a woman have that much power over the man... enough to literally make him break the law?
Updates
+1 y
Last thing I've heard, the guy has been on good behavior since but is ruined permanently emotionally and psychological. Those that know him are still left wondering what on earth he saw in her.
How can a woman have so much power over a man?
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