Ok, example. You've watched movies where a dude looks at a woman sitting alone or talked to her, and her boyfriend/spouse shows up. Sometimes he gets angry at the random dude, sometimes gets angry at here for talking to him.

Same sort of thing except reverse the roles. It is still a control mechanism, and still wrong no matter which way it goes.

I've had women get angry at me because I'm talking to "their" man, and some will get angry at men for simply looking at a pretty woman or talking to any others.

In the workplace, this means that treating women the same way as men - building rapport, having lunch, etc - winds up causing problems at home.