I need help getting over a crush

So there's this guy that I love like want to be with love 
But he is my best friends brother like one year older then me I rarely see him only when I at my best friends house 
And btw we are across the road from each other 
I know we will never be closer so for now I just need to get over him because it is literally killing me 
So if anyone has any advice or anything to get over this crush please comment