Crushing on someone you shouldnt

I just have the biggest crush on this great guy, we are really close, and yes I've let him know. He says he has feelings but cant date right now. So I've tried to cut my feelings out, but hes honestly just such a great person its hard not to crush on him when hes a total catch. I respect his wishes to remain just friends and it's like how do I stop crushing on him and still be just his friend?!