Did he try to make me jealous?

We were agree we want to date. He knows I'm possessive. After we had sex again, while we were cuddling, I was naked his bed, he said there is nurse at hospital very hardworking etc but he was devil-ishly smiling. He must have something with her. I couldn't say anything since we are not exclusive but I got upset and felt really bad

Why did he say this to me when I was naked in his bed and make me upset?

Did he try to make me jealous?
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