Why are you people responding if you won't bother to read it? Its not that long, you're acting like you're still in elementary school. Fuck off if you're not going to help, damn man, but back to what I was going to say.
This happened to me a few months ago. I was the one going crazy though. I took 5 hits of strong LSD (by the way even if it wasn't LSD, it wouldn't make a difference, you took a hallucinogen no matter what) and it was going fine at first. My friend took 2. I had benzos on me in case of such a situation too. My friend knew it, but his response to this situation was kind of selfish, he didn't want to have to deal with me. You did the right thing helping him though, even if it damaged you, and I'm sure he's very thankful.
For the first few hours of the trip I couldn't really get my thoughts together and verbalize, like what happened with your friend. I got a bit aggressive with the friend I was with but all I did was push him and say "aggression!". I was just trying to communicate that he needed to express what he was feeling, because he was already kind of freaked out by how I was acting (which is reasonable, I was acting almost insane). It seemed odd to me and me not being able to think/verbalize correctly made it worse. Then he ran away from me full speed. Suddenly everything changes, him running made me snap, my mind couldn't make sense of what was happening for almost the entire trip, like I was a step behind of reality, so when he ran that made all of that worse. The world behind me falls into a black hole and I was thinking that, if I don't run and catch up with my friend, I will get caught in this black hole. So from there I have the delusion in my head that I need to run and figure out this "riddle" of how to get out of the state i was in (hard to explain, don't ask). What really happened was I ran, lost him, sat in someones grass awaiting what I thought was death (because I gave up on trying to figure out the riddle), got piled on by cops, and put in an ambulance. Your story is extremely similar to my whole story (theres a lot more details I'm not including here). The reason I think it happened was because my mind was behind what was actually happening, it was too much sensory input. I had no idea what was happening while it was happening, and it took me a couple days of trying hard to remember it all to come up with the whole story. I don't think it was too much LSD, although that definitely was part of it, and I didn't permanently go crazy. In fact, the psychotic state ended as I came down from the acid and from there on there were no side or lingering effects at all. I trip pretty often actually, I consider myself one of the most mentally stable people I know (sober and while tripping), but this was weird and unexpected.
It is reasonable that you wouldn't want to speak to this friend of yours anymore, but try to at least. He didn't mean to do what he did. After my incident it was pretty difficult for me and my friend to communicate. I was hurt that he just ran away from me, he was traumatized by seeing his best friend go insane while he himself was on LSD. Its been a while and we still didn't "work things out" completely, he has this problem where he can't face his problems. So think about it, you're the one who is hurt here and he is obviously very sorry for it. I know it will be hard and you don't want to do it, but if you don't face your issue here it will just make it worse for you.
Edit: You can't figure out why he went crazy. In my experience, there was not one reason, but too many. It started with me not being able to communicate with my friend, then this massive bee started flying around us which freaked me out and I couldn't get over it, I meditated and it was sooooo intense that it really stressed me out, I couldn't really stand up or think straight and we had to go act sober while we picked up our friend, instead of trying to figure out/deal with the problem my friend ran away from me, we both forgot about the benzos, I picked a forest (which is great for weak trips but when you trip really hard you just want a bed and nothing to bother you). In the end the actual snap was when my friend ran and it confused me into insanity.
