Ex is engaged

An ex (he was the dumper) contacted me first time in over three years to share a romantic memory, nothing more. He got in my head - so I checked his social media only to find out he is about to get married next month! WTF!! Why did he reach out to tell me he was thinking of me and a special time I our lives? Just to mess with me?! I almost feel like it was a bit vindictive. Doesn’t this just seem so wrong?