Is it justifiable for a man to get jealous in a relationship?

nobody has the right to control anyone else, simple as that. i cant stand the jealous type, especially if they take it to the extent of trying to tell me what i can or cant do. that would be a sure way to piss me off and end up single. jealousy is petty, childish, and ridiculous. if you can trust your significant other then its all good, if you cant, then move on, its not worth it, no relationship can last without trust.