If you were in a healthy relationship he would've been open as to his plans. He'd have chatted, even if he couldn't make it to see you because of the wedding stuff, he should've let you know ages ago because that's respect. Perhaps with a promise of a nice meal out as a belated celebration when you got to see each other next? Anything to feel valued - and this is how you should feel in a relationship.
It's also rude. You could have also made your own arrangements with friends, family, or even set yourself up for a nice day, buy a little cake, get yourself a takeaway, chill out lovely day as a way to enjoy yourself.
Am sorry, but people who are fond of another will keep communication open. For sure, he may feel pressure over how you react with lots of whatsapp messages, but this really is coming from him and he shouldn't have blocked you. Had his communication & plans been clear, you'd have had nothing to react to. He's making you feel like you're always wrong-footed, always making you second guess yourself. This is not healthy and as much as you like him, I don't think he is a good a catch as you think he is.
My advice? Be truthful to yourself and don't think emotionally. Take a step back and see what he actually brings to your life. If it's more aggro than good, then find someone better who doesn't play games. Throwing this 'choosing between a child and you' is bollocks and manipulative. Arsehole move imo.