My boyfriend wanted me to be mad that someone liked him, why?

My boyfriends friend said that there’s a girl that likes him. Then my boyfriend told me information and asked if I was mad, when I replied with no he said “ugh I wanted you to be mad.” I don't know if he wants me to be jealous bc there is one guy that is obsessed with me and that obviously pisses him off. What are your thoughts?
My boyfriend wanted me to be mad that someone liked him, why?
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