Is it okay to be upset that my husband is still mad at the guy that stole his ex?

My husband and I have been married for about a year and four months and have been together since 2018… I always understood that he has been upset because his previous two gfs cheated while in a relationship with him and one cheated with a friend who was like a brother to him… years later, he wakes up from a nightmare and can’t stop talking about how he is still very angry at the guy and how he hates him… I had just finished putting together Easter baskets for him and I as a surprise and went to wake him up and just…. Feel kinda put out that this is what the morning is up to… idk… I know he’s still upset about it all and he doesn’t want to be together with his ex, but… it hurts that this still makes him so randomly angry… is that wrong?

Is it okay to be upset that my husband is still mad at the guy that stole his ex?
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