Is he a player or should i pursue him?

This guy just started at my work place and when i told him i liked him he said he barely knew me but he thought i was a great person so far. He said there was also someone in his life right now that he was after. I was like ok what ever that is cool. Than the next week at work he teases me like crazy and talk to me. He is always makiing fun of me and when i get frustrated at work he tells me i am awesome and should not let work get to me. He teased me today and i got annoyed with him so i fought back and stuck up for myself and he was like finally your fightin back. Than i started to begin to teases, like he woul d walk in my way and i would say get the **** out of my way and he would just laugh. everytime i walked by him too he would pretend to backhand me. I was insecure about wrapping a pallet so he started it for me and made me do it no matter how hard i tried to get out of it, he just told me he believed in me and i should believe in myself. Does he like me and why is he glad i am sticking up for myslef against him now? Yesterday him and my friend at work were unloading some furniture onto the crappy wheeler we got and he looks at my friend and goes we should send her to go get the good wheeler and he looks at me and says go get it geez. I said ok i will and he is like no no i was kidding we will make due, but i went anyways and got it. When i brought it you can tell he felt bad but he thanked me a lot for it.than today when i told him i was going out with a friend for supper he is like you got a date, you got a date and he kept on. I said listen its a girl that i am going with than he is like oh is she hot? He asked what she looked like than he said maybe i want to come too to check her out. Is he a player? Does he like me? What the heck? He said to me today that he is keeping his options open