Why did this guy ghost me? Couldn’t he at least respond?

So the last year guy 1 was asking me out but I met guy 2, who I really liked so I turned down guy 1 multiple times telling him I was really into someone else. Me and guy 2 were on and off a little for career reasons and guy 1 would ask me out randomly and I met him once but told him we shouldn’t again because I was too hung up over guy 2.

So like half a year passed and me and guy 2 have been on and off because he’s possibly moving because of his career so we decided to not see each other until he figures out his life. This same day we broke it off, guy 1 asked me out again so I said yes. However, they were mutual friends on social media so I wanted to check they weren’t friends. I asked guy 1 and he said he always liked guy 2 and went to school together years ago but haven’t spoken recently and asked why I brought him up. I told him he was the guy I’ve been seeing and told him about before and he really hurt me and kinda broke my heart and we aren’t on good terms (at the time we weren’t). He said sorry, that’s a shame since he always liked him. Then he stopped responding. I tried messaging him to follow up on our date since he asked me out and was all over me before I brought up the other guy. It has been a week and he ghosted me. I messaged him and said I understand if he doesn’t want to see me after knowing that about his old friend, I told him me and guy 2 are cool now and there’s no bad blood. I wouldn’t talk crap about him. But he didn’t respond to that either. I’m just confused?
Why did this guy ghost me? Couldn’t he at least respond?
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