Is jealousy bad in a marriage?

My husband is not one of those men who cheats. He believes in marriage until we're dead. He has shown me complete and utter raging jealousy even when a guy calls me beautiful just a simple compliment but I turned the tables on him cause now I get jealous of his stupid fat ugly married co worker. She's big and intelligent has 3 adult kids and I dont think he would want any of that. But our marriage has been good and bad. I think we're both insane.
Is jealousy bad in a marriage?
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