Search Results: similar people like each other

There's a guy that I'm not sure if I'm into or not, and I can't tell if he's sending me signals he may be interested in me. We're in similar classes, and when groups of my friends and I are studying, he'll randomly offer to help me (even if I'm not doing work for that class/need any help), ask me to help, or ask me what we're covering in my class. Yesterday I went to a party, and he was there. We were all dressed up for Halloween, and when he walked up to talk to me, he quickly said something like "I probably asked you this already but what are you?" When I explained my costume, he said "I like it, you look good." He kept talking to me a bit, but then his friend called to him that he needed to come back to the game they were playing, and he left and touched my shoulder as he walked away. I was talking to one of my friends nearby a game of beer pong, and when the guy was playing, at the end he randomly called out to me and told me to take the last shot (even though I wasn't playing or drinking, and there were other people who would've been better). Just random interactions throughout the night seemed kind of different. At the end of the night when all of us were saying goodbye's, most of us in our group of friends hug each other bye, and he first awkwardly gave me a high five but then a few seconds later gave me a hug. He also made a joke about my costume, and when I asked what he meant, he quickly said something like "Oh I don't know never mind."

I feel like since I'm not even sure if I'm into him, my perspective isn't too skewed to where I'm reading all the little signs as positives, but I was just confused at some of his recent behavior, especially at the party.