There's this boy from work and .. ?

he has thee BEST personality and i used to have a little crush on him but that crush went away. now we work together and we talk and stuff, but he talks more to my other friends that work there but we still talk. we KIND of flirt but the people he's friends with, are likee more higher than me i guess you could say. my question is what should i do or say? because i think it'd be cool to hang out with him or whatever loll. helpppp? (: