Am i overreacting?

My boyfriend reposted a picture of his gorgeous best friend (a girl) on his social media, for everyone to see. He has reposted plenty of pictures of me, and two of her. I have always felt like he may be attracted to her, because I know that he finds her pretty, everyone would. I feel jealous, insecure and disrespected. I’m very upset because he knows that I have always been uncomfortable with how close they are, and that I’m not 100% secure with them being friends. This feels like a punch in the face because he’s aware of my feelings. Am I overreacting by bringing this up?

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