How to move on from my (first) crush?

Hello people,

i have had my very first crush about 1 and a half year ago when I was 22. So yeah guess I am a later bloomer haha However at the beginning I was happy I finally crushed on somebody lol But I knew from the very beginning that I would probably rarely (or even never) see him again. I met him on a birthday party of a friend of mine. One year went by and I didn't tell anyone about my crush as I was certain I'd see him again on the same birhday. However, my friend celebrated seperatley (she has two groups of friends). I know I should probably have told her but, even though we get along very well we're not very close friends and barely see each other. So I felt uncomfortable telling her… So I texted my crush on FB one year later (awkward, i know, i guess I'm regretting that tbh). He didn't read the message tho (because he had no FB messenger) so I messeged a friend of his I also met on the birthday. I am 99% sure he read the message but nevery replied to this day. Rationally, I probably shoudl take that as a "No I am not interested" or "I am sorry but I have a gf" but my stupid naive brain can't stop clinging on the 1% chance that he did not read the message (also the message i sent to my crush is still on "not delivered"). I am sorry, this story is so confusing (because so is my situation xD) But yeah I am trying to move on from him day by day but i just can't imagine dating other guys because me feelings have been so strong (probably because it's been my first crush?? as i don't really know him at all…) And i feel if i would date another guy now that he would be like only second choice…. It just feels wrong to simply move on but not moving on is probably only hurting my heart more and more. i feel like a 13 year old teenager obsessing over a boy for no reason but yeah i guess taht's what i am doing at the moment and i feel so awkward

Idk if I'll get any answers on here but i just don't know how people move on from their crushes??? I mean my feelings don't change simply because he doesn't feel anything for me (which i don't even know for sure). In my mind i am still hoping to see him this year on the birthday but idk if that is very likely because of corona

THank you and have a nice day!