I can't get over him. What do I have to do?

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We never dated. We have been friends for 10 years and best friends for 4. i am 16 and he will be 17 in less than a month. We were each others first. We have been fwb for about a year. Of course I started liking him. I still do. For months I have tried convincing myself that when he holds me or just wants to hold my hand or kisses my forehead when I am having a bad day meant he liked me but I know he doesn't. He had girlfriends but he didn't like me having boyfriends. I let him control me. I like him so much and I need to get over him. I make myself sick with being sad. Please someone help me.