Confusing Guy I Like

I’ve know boys at times that have been confused me with their actions but I’ve always been able to figure them out after a while. But with this one guy no matter what I try I still can’t figure him out. So we met not too long ago (probably around 5 months ago) at this volunteer like thing we both do now. I’ve tried so many things to show that I like him and see what he feels like me but I can never understand the way he acts. He helped me out one time when I asked him and I decided to hug him. His response was a long monotonous “ahhh” like he was exaggerating being afraid or something (or maybe he WAS afraid) and he didn’t hug me back but he didn’t exactly try and pull away. But it seems like whenever we are going to be going past each other and it’s possible that even only our clothes may touch it seems like he tries his hardest to give me as much room as possible so we don’t come in contact at all even on accident. But I’m pretty sure that I’ve seen him doing this by other people too. And whenever he’s walking around its almost like he comes within about 7-10 feet from me quite often. But yet it seems like he trys to avoid walking past me via a route that would take him to about 3 feet from me. I try to start conversations with him but for some reason he always “kills” the conversations with his replies. He talks to most of the guys that are there more then anyone and he talks to some of the other girls at times but almost never without them saying something to him first. He’s only kind of said something to me before I said something to him (besides a “hi” when he comes into the building if he passes me). We were moving some boxes around and when he took the last one I kind of jokingly complained to him about taking the box I was going to take. Then later when we were moving some more boxes and there was only 1 left he was about to take it and but then he stopped and said that I could take it But one time when we were standing around in the break area I asked him what soda I should get and he said all of them and grinned at me. So then I tried to make it so that he would have an easy choice by asking which of 2 different types of soda I should get and he said both and grinned again. I don’t know if he was joking or being sarcastic or what because I know that some people do put more then one type of soda from the machine into their cup to mix them. And then a few days later I tried to get a conversation going by asking him if he liked volunteering and he said sometimes. So I tried to keep it going by asking him if he liked the types of things he does while volunteering and he said sometimes again and kept walking to do whatever he was going to do. I tried one time to see his reaction to me and it didn’t really work. Me and a friend were standing talking and he walked up to ask my friend for the tape she had and I said “Name is my best friend” kind of like jokingly out loud so that he’d hear it but it wouldn’t be awkward like if I actually did say it seriously. He gave me a look that was like shock and confusion and walked off with the tape. And its not like I have any idea what I can say to him to get him to talk because noone really knows anything about him or what he does outside of volunteering. There are only a few things he’s let people know about him self that aren’t really good to start a conversation with because its things like he doesn’t like barbeque sauce. Can someone please help me out? I can’t understand why he acts like he does. I want to know if he likes me but I can’t figure it out and I don’t know what I can do to see if he does or not. He might like me and be shy, he might like me but avoid me for some reason, he might not like me, he might just be being polite, or he could be anything for all I know. Any advice and input would be greatly appreciated because I don’t know if I’ll ever figure him out or be able to have a conversation with him that lasts at least 1 minute if not more. What else can I try to show him I like him and make him have an actual conversation and so I can find out more about him? How should I act around/to him? And no I’m not able to just go up to him and tell him I like him or anything because it would be overheard then rumors would be started and it’d be very awkward no matter what his response would be. Plus if I did that he may think I was just joking or being weird or something. PLEASE HELP!!!