Is he overreacting?

I posted a selfie on insta, and my old hookup liked my picture. Then he posted a video of his music an hour later and I liked it. I haven’t talked to him for a year, he just started following me recently & I followed back which I don’t think much of. It’s just a follow. 🤷🏽‍♀️ But my boyfriend is upset with me now. I unfollowed him but he’s still upset with me lol.