How do I deal with a spoiled boyfriend??

My boyfriend picks on me when we are in front of people all of the time. He did it today in front of my sister and she told me that he was very rude to me and I should tell him. I told him and he blew up at me.

He always get upset because I never tell him how I fell but when I do (like today) he blows up and makes it a big deal!
How do I deal with a spoiled boyfriend??
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