How do i know if he's into me or not?

so this there is a guy that i like at work and i've asked people at work if they think he likes me or not and they just say he's shy. i hung out with a couple of my friends and someone that is both me and hes friend. we went to a haunted house type of thing and i get scared easily s he had his arm around me and everything and u know gave me a kiss a couple of times. Before the night was over he walked me to my front door and told me that he wanted to hang out more. i tried to call him during the week he doesn't have text messaging so i can't text him i don't know he hasn't responded. I worked with him on saturday and he didn't say one word to me not even a hi. For my job since if we get off late at night at work we have to have someone walk u to ur car b/c my jobs doesn't want people to get robbed their tip money etc. and one of the door men/bouncers ask the guy i like to walk me out to my car (by the way he has walked me to my car before) and he just said he was busy... so i don't know what to do? should i still try and show/ tell him that i like him or should i just give up?