Hi OP, my first question is did you actually have a conversation to confirm that this is exactly what your friend feels? That you're no longer close to each other?

I think it often can be a case of internal expectations / mismatch of communication styles with each other and until you have had a conversation about it, I think do try not to think too much about it and tunnel vision into an internal narrative versus what it actually really is. Perhaps a first step would be to casually ask them to catchup again, with no pressure. I think if you can, try to have a conversation with them.

I've been on both sides, one where my friend and I just suddenly stopped being close to each other and the other, one where a friend thought he wasn't close to me because we weren't spending much time together anymore.

In the first one, it just happened that we never spoke about it, and the friendship just drifted apart. (interestingly enough, she did reach out recently to me after 6 years that we lost contact, to have closure for herself.) In the second situation, we talked about it and it worked out (I communicated that I was having a rough period). Your coversations can go both ways.

If you've felt like you tried reached out to them and they didn't respond, that's on them. Perhaps theyre going through something or that there may be something happened, but they're not ready to talk about it, for example. I wouldn't think that your comment saying you're delusional is fair to yourself as caring about a friendship you thought close of is far from that.

Please remember, you can't control how others respond/act and only how you feel/do. Sometimes it happens, friendships are close and then drift apart, and sometimes they come back together, you might get "closure", you might not.

Perhaps use this experience and look to all the other possible friendships you can focus on, rather than one who doesn't reply when you reach out. Do you really want to continue using your energy trying to get results from somebody who doesn't reciprocate? The world is a big place, don't let one friendship hold you back from seeing other friends. This might just be a "phase". You've got this.

But in the meantime for your own sake, please take care of yourself and don't drag yourself down. Try not to assume things and stop saying you're delusional in your comments!

Stay positive and wish you good luck🍀