Crushes on Straight People

Hello, I've never posted on here but I feel really trapped and I decided to try to find some help. I'm a 16 bisexual guy and I'm really close with my straight friend. He's been my best friend for quite a while and I have developed a big crush on him. I'm not delusional and i know there isn't any chance of us dating but I was wondering what's the best way to deal with this. He doesn't know any of this but I would really like to be his friend and can't really imagine a world where he isn't my friend but I feel so lost and confused and was wondering if someone can help.