Advice for a friendship 13M & 12M

I M13 had a crush on a boy he’s a few months younger than me so M12 and I knew he was straight by looking at him a few months before our annual camp with cadets (a week of military lessons and stuff on a army base) so I already knew I shouldn’t look at the relationship I’m trying to build at annual camp as romantic and instead a friendship as he is just amazing and I just wanted some form of connection with him while being considerate of him, we were literally inseparable all of camp our friends all said we were and yeah we knew that but about half way through people also started commenting on how they think we’re dating bc yk we’re always together and of course I said we weren’t even despite the fact I had a massive crush on him I was keeping it to a friendship which was my complete intentions bc he’s young + I just don’t think I’d get a chance with him, but as people kept saying this when we were out at night walking around the conversation came up and he said “I wouldn’t date you if I was gay” which ik he didn’t mean anything by because he’s a very sweet boy and he just makes says what comes to his mind because he’s neurodivergent of some kind I don’t know what exactly I just remember that he is, and I was fine with that bc I’ve mentioned, wasn’t my intentions with him but I still was struggling with mental health at the time so was a blow to my confidence but I brushed it off at the time, it was okay for the next day or two but on the last day of the week we had there I texted him as I really needed to speak to someone at the time because my mental health was getting worse and we agreed to talk later (I didn’t tell him the subject just I wanted to talk later after dinner) but I opened a voice note from a person that’s not really my friend but knows me from cadets and has heard me talk about him before and they told me that I had made him uncomfortable because “I was around him too much” but it is genuinely confusing because we laughed the majority of the time we were together and from anyone’s perspective including mine he enjoyed my company but after this it made me spiral because from my crush I cared about him very deeply and he was for the most part the only person I trusted that was close to me, I did try to kill myself with a bottle of water and salt because of how adversely it affected my already low mental, I mean I made the only person I liked, was comfortable around, cared about and trusted, uncomfortable with me but I got took to the hospital by a adult on camp and I was let go as my salt came down just before they thought I needed and iv as they took my bloods a few times, I had a phone call from a adult in cadets our detachment commander/dc and she told me his dc said there’s nothing to support he actually said I made him uncomfortable so I’m lost between hope and guilt about it because although they haven’t spoken to anyone including him yet they did still say he might not of but at the same time he blocked me

**Main question:** how do I save this friendship if he didn’t say it and if he did? Especially since he will probably be told about my reaction and I’m worried how he’ll take that as he is young