My boyfriend called me a "dumb ass bitch" and a "stupid slut" just because I followed this guy back on social media who followed me?

This local musician in my city followed me on social media so I followed him back.. no big deal? He went through all of my followers for some reason. He flipped and called me all these names.. He follows bikini models, and it makes me insecure. Him following them bothers me low key but then I feel dumb about it later so I never bring it up. Am I in the wrong?
My boyfriend called me a "dumb ass bitch" and a "stupid slut" just because I followed this guy back on social media who followed me?
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