What should i do about this friendship

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Hey so ill give you some backstory so you can understand my situation with this person.
My gf was assigned to work on a far place. I went with her and we now live on a small city. Its been a year since we moved on.

We come from the big city, and this town seems far too small for us, as we have made few friends to the point we even hate living here.

So i met this guy on my work, he's about 4 years younger than me ( im 28) and i really liked him when i met him, he played videogames and smoke weed when also beign a nice person to talk to, ¿what else could i ask for a friend on a strange place?
Thing is the guy is a mess with money, we earn like 750$ a month and he was paying a rent of 450 $ a month . So every 10th or 11th of every month this guy would start to ask me for cigarretes or papers or buds, but the way he asked for it was just unpleasant... i mean what he did was sending me messages at 3am telling me "PLEASE SELL ME A COUPLE CIGARRETES" and shit like that. It reached a point that i talked with the guy and told him: Look, if you need money ask me for it, i consider you my friend and i can help you if you need it, but is very uncomfortable for me to recieve such messages at those hours.

He just said oky and stopped talking to me for about 2 months. i ocassionally asked him what happened in our friendship and he just told me that we were no friends, but just workmates. Since that very day i ignored him completely, and even avoided him in order to not have to talk with him

Thing is the last couple of weeks the guy has been really talkative and i see how he tries me to like him again but i dont trust him at all.

Sorry for the text of wall.

TLDR: A guy who i thought was my friend hurted me and now im ignoring him but he is trying to get my trust again. What should i do. ignore him or give him a second chance