While this whole discussion of the word ‘thick’ is interesting, it’s a derail.
His inability or unwillingness to sort things out (whether it’s an honest mistake or clumsy insult) is a big concern. Either way his sulking is designed to leave you hanging, and punish you for not being ‘nicer’ to him.
One year in is exactly when these traits come to light. Before that it’s usually best behaviour, and no point in him twitching the fishing line until you’re well and truly biting down on the hook.
Now you see how he deals with a pretty low level ‘blip’ in your texting conversation, how do you imagine he will deal with bigger things down the track?
Even at best, he seems far less mature than you are (and than his age would require). His conflict style is totally at odds with yours, and he seems to have no motivation to communicate through problems. Yes, some people can communicate/apologise through actions instead, but he’s not doing that either. He’s staying away from you, making it all about himself, and assuming you’ll come begging cos you’re ‘in luuuurrrrvvvv’. You’re already showing signs you will comply, by texting him at all.
I remember an incident a lot like yours happened to me, on holiday with an ex. Whether he was conscious of it or not, the fact that we were on holiday put even more pressure on me to ‘make things ok’ or jolly him out of his sulk. He blanked me for 2 days, in the same hotel room. I was so desperate I rang his mum. She sighed and said ‘Oh his father used to do that. It’s quicker if you just give in love, and make the day extra nice for him.’
Something clicked inside me. I believe the feeling can best be expressed in words as ‘Oh fuck no’. I booked a train ticket home, and on to a life filled with adults rather than damaged toddlers. He chased me for months, but I never forgot that feeling. I knew in my heart that I’d be signing up for a life of it. Whether it’s their fault or not, change is very very unlikely. Especially past 25.
And don’t get hung up on ‘but I love him’ or ‘but he loves me’. Hanging up your chances of happiness and security because you’re determined to fix someone damaged is the biggest mug’s game on the planet.
Best way to not text someone is... don’t text them. Do ANYTHING else with your hands and brain, except that.