My ex bf brought his new gf to the place where we met and had our first kiss. He shared it all over social media. It hurts. How should I react?

If he's ur ex why u still friends with him on social media? Even at that, just shows what a person he is if he's bringing a new gf to ur old place. He's a prick for doing it, not worth getting upset over, he's an ex for a reason