How to flirt with a friend?

I really like one of my guy friends. We spend a lot of time together and are pretty close. I try to get him to do stuff together. I always dress nice and make myself look pretty-especially when he is around. Neither of us are physical touch people but I try to break that barrier when there’s a reason (like when we play sports together). People think we would be good together. Some people think we ARE dating but he doesn’t cross that line. I don’t know how to make it any more obvious or how to get him to cross into dating territory when he’s standing with his toes on the dating line.
How to flirt with a friend?
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