how can someone be so full of themselves?

so around 4 5 months back I met this guy on reddit it all started completely normal we were hood friends used to talk all the time switched to others socials basically it was perfect. I was having a hard time back then so I didn't really have anyone to talk to and that's why a stranger on reddit felt like my last hope. still the same btw. however we soon started liking each other a bit and kinda got into a relationship? at least that's what he thought I didn't tho cuz well wtf even is am online relationship huh? and sooo dude became so chronically online replying to my texts in that very instant whereas I hot a bit busy with studies and just deliberately got a bit distant cuz the last thing I wanted was to get attached woth someone I met online. and that's when all of this melodrama started and he started saying that you ignore me don't reply to me that much I'm here putting in all these efforts and you don't do anything I mean agreed I don't but dis I ask you to do anything? idts I never said anything as such about us and he's out there thinking God knows what. anyways, today what happened was smth similar to that and I just said it that maybe instead of always saying stuff like you hurt me broke my heart etc etc all this emotional bs maybe just ask the other person hey whats up? just because you're desperate doesn't mean the other person has to be too. so idk what happened exactly but he said ok I got my answers bye and that's it. idk if he's gonna block me for "his own peace of mind" or what but even tho he's the only friend I have rn I'm weirdly ok with letting him go. I know that this might sound like it's my fault but I didn't know what to do I was never certain about how I felt and he just assumed it and carried forward. so yeah I'm back to where it all started now ig all by myself lonely yayyy. but the good part is that I can use this to study instead but who knows how that's gonna work out.

TL;DR: Met a guy on Reddit a few months ago, we became close and he thought we were in a relationship, but I never really saw it that way. He started getting overly attached while I pulled back to focus on studies. Now he feels hurt and ignored and left after some drama today. He might block me, and even though he’s my only friend right now, I feel strangely okay with letting him go.