How do you act natural around your crush?

I'm friends with him and it was going fine until one fine morning almost a month ago I realized I could date that man and even possibly marry him. Now whenever we stumble upon each other, my cheeks get warm and pink, I can't make eye contact, I fidget or smile way too much unnecessarily. He does understand I think, he starts looking at the sky, gets quieter or plays with his watch or something. But we do talk to each other whenever we see each other. How do I be cool and nonchalant again? Nothing is helping me in getting over the crush.

How do you act natural around your crush?
Post Opinion