Am I being ghosted?

Me and this guy had been talking consistently for about 3 weeks. He’s really affectionate with me and stuff, told me he misses me a few days ago, likes all of my stories, is really flirty. We’ve hung out twice and we’ve hooked up. I’ve stayed at his place too and he’s cooked for me and stuff. There’s def been some red flags though, like I felt his energy sort of shift especially with how much he was texting me. He also stopped making plans with me. Anyways, yesterday at around 5:30 pm we were texting and I threw in a little flirty “when are we gonna see each other again :(“ and he stopped replying and then went and started posting things on his story. I honestly thought he was ghosting me so I went ahead and blocked him on instagram. It’s 10 pm the next day and he still never replied to my text. I’m wondering if I did the wrong thing, or am I valid in having done what I did since it’s valid to assume he was ghosting me?

Am I being ghosted?
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