Why would a platonic guy friend completely stop interacting with me, he made it clear we were simply friends?

I was befriended by 2 guys who enjoyed music jamming shared that same passion for music etc. One was dating a guy the other was straight. We literally friend zoned each other lol. Last conversation though was me asking him his opinion on another guy he knew I was going on a date with. Haven’t spoke since. I understand if it was to respect whatever happens with the date but didn’t think he’d care really. Was this actually something more? It’s left me quite hurt and confused. thanks to anybody who has advice. :)

Why would a platonic guy friend completely stop interacting with me, he made it clear we were simply friends?
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