What should I do????

Well I still really like this guy that broke up with me in August. I just can;t get over him and we didnt talk for a long time. But now like he is acting like he did when he liked me. He acts all goofy around me and is always looking at me and on Friday we were running the mile and he acted like he was gunna grab my legs and pick me up but then he lifted up and smiled at me. he always puts his hand on my shoulder and doesnt just lift it up he kind of slides his hand along my upper back and then lifts it up. But Im very iffy about if I should talk to him and ask him if he still does like me. Because honestly i think im falling in love with him. Any advice?