Help I need sleep!!

Okay this is probably a really weird topic to ask about but I have been struggling with it for the past few months. I have not been able to fall asleep or relax lately because I have been overthinking/daydreaming about my crush. This is probably really weird and stupid but oh well. Every time I close my eyes he is there and I cannot control it no matter how hard I try!! I have done pretty much everything and am running out of options. It's terrible because I can't sleep when I think about him! Ugh he is also in my dreams. Anyone have any suggestions? Thanks so much