Apologies for the direct question, but how old are you?
In a couple months you'll find someone or something new and exciting, and laugh at how this felt like the end of the world. Just make sure you don't wallow in a pit of depression. Go out into the world. Do your hobbies. Find new hobbies.
Also, consider using more line breaks for readability.
You have a lot of life ahead of you. The feelings will fade. Don't wallow. You'll be fine.
When I was a youth I had a lot of big feelings about relationships and crushes and friends. The feelings were real. They certainly took up a lot of space in my head, but they weren't really proportionate to what was happening. Everything felt big because it was new to me. I barely talk to anyone from that time in my life anymore. I live in a new city with new friends.
You'll be fine.