Why did this dream make me feel extremely possessive and anxious?

My boyfriend had a sexual dream about a month ago that he told me about. It was a very detailed and graphic swinger type dream. As I was reading it I proceeded to get more and more protective and possessive of my boyfriend and shortly after I had an anxiety attack. It was painful. It was the first time that I had experience this feeling in a while. Last time it was when I was dating a guy and I had a feeling he was cheating on me (he was even made me feel emotionally numb for months). In this case though it was just a dream. I hadn’t even gotten to sleep at this point and I had work in 2 hours. I went to work and every interaction with people had me feeling like crap.

My heart physically hurt all day until after he dropped me off at home. I couldn’t get a hold of him so I was sitting there thinking and when I did get a hold of him I snapped. After I snapped I felt better but I feel bad because I hurt his feelings unintentionally trying to express my own emotions. We’re good for the most part now but that dream mad me feel uncomfortable about being around other girls. I didn’t want him near or touching girls by accident. That’s all over but it has me confused why I reacted that way.

Why did this dream make me feel extremely possessive and anxious?
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