Why would a guy who considered you a friend just ghost you?

Me and this guy knew each other through our father’s, and I always considered them family friends. We didn’t hang out much when we were little, simply because my parents were divorced so I’d be with my mom a lot. However, recently when my father had a house warming party, his family came and we really hit it off. We became friends again and actually hung out a couple times and texted. His dad would tell me how much he’d talk about me and how he basically adored me.

All of a sudden though, he stopped talking to me out of nowhere. At first I didn’t mind because we weren’t super close friends, but then over time I got kind of irked. Like why ghost someone? I thought maybe it’s because we don’t have too much in common, for example, I’m a full time student who works professionally in a lab, and he’s a stoner who floats between jobs. I’m not saying there’s anything wrong with the way he lives his life because absolutely not, but of course it makes it clear that we’re not super similar people. Kind of like, I’m a tight-ass while he’s super carefree and go with the flow. I just want to know why he stopped talking to me. Even though we weren’t super close, I did enjoy his friendship. He was really easy to talk to, and I would’ve loved to see our friendship grow. Why would he ghost? I reached out and asked a couple weeks ago, but no response.
Why would a guy who considered you a friend just ghost you?
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