Flirting

He rejected me but still flirts and stares constantly... HELP!

I asked a guy out at the end of September that I had been crushing on for the whole summer. (he's 29 I'm 21). I was proud of myself that I was so straight forward with him. I asked him on a date and he explained he didn't have time. So, I straight up told him I really liked him. Apparently he already figured it out. I asked him how he felt about me and he said "well... we're... friends..." UGH! it was like pulling teeth to get him to say it! I asked if we were JUST friends and he said yes. Well, a month goes by and I hadn't seen him because he got a Halloween job (he works as a barback at this bar I frequent). The first time I saw him after he came back he was extremely talkative which is weird and he wouldn't shut up for 2 hours. Then he always makes sexual jokes towards me. I've been giving him the cold shoulder as of late because I really want to move on but then he starts being all touchy feely giving me a lot of hugs and wanting hugs whereas before he always said he didn't like hugging people. This last month and half he has been staring at me allll the time. all of my friends have noticed this and say that every time I have my back turned he'll walk by and stare. He did this before I asked him out too, but now he does it so that I catch him staring. It's very obvious and its making it hard for me to move on... in fact I'm afraid I've fallen for him again. A part of me is hoping he's realized he made a mistake but I know that's just wishful thinking. Why do guys do this? And what should I do?
He rejected me but still flirts and stares constantly... HELP!
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