What is/was he thinking? I know it's long but please. Someone help a girl out.

Ok so, lets start from the beginning. So A few years ago I came to a new school because my mom got a job there. Everything was going great and sometimes I would eat Lunch in my mom's room. There was this boy he was in the room ( Because my mom taught him) when I came to eat lunch. He was also a grade ahead of me( I was in 7th he was in 8th). He started talking to me and he began calling me by a nickname( Well, kind of he just said my name funny) So as time went on, he began to joke more and more with me, He would take my stuff and run from me and I would have to get it back from him, He would tap me on the shoulder and run of the other side. Just trying to be funny. He would ask for my food sometimes. He said hi to me in the halls. Then one day I was leaving a class And I See him in front of me. He sees me and he opens his arms and he comes close to me and he kind of Hugged me and like walked forwards with me like in his arms and kind of pushed me up against the wall a little bit. So at this point I had a huge crush on him. And I really did think it was possible that he liked me because of what he was doing. Towards the end of the year he Got in trouble and I didn't see him the whole last month of school. He also had friended me on instagram and I friended him back. We had messaged a few times just like,"Hey what are you doing" stuff like that. Eventually, I got the courage to ask for his number (on Instagram.) He gave me his number and so I started texting him. I did not see him all summer. And when I was in eighth grade He was a freshman. During my eighth grade year I decided I would confess that I liked him. I said it through text and when I had said it, we hadn't seen each other in about a year. He was really nice and did not make fun of me. However, he said "I have something going on with another Girl, so something like that probably wouldn't happen." A few months later, I texted him about something I don't remember what, but it was a normal conversation. And it somehow came up that I wasn't eighth-grader and he was a freshman. And he didn't realize that I was an eighth-grader. He thought I had moved schools. And that's why I was not a freshman with him. So the entire time that I had known him, he thought I Was in the same Grade him. ( Side note I'm only a couple of months younger than him.) Moving forward I am now A freshman and he is a sophomore. I see him during lunch every other day. And I Try not to look at him because honestly, it's hard. During the summer I had mostly gotten over him But then I saw him at school again and I was right back where I was when I first started to like him. Sometimes he looks at me. I don't look back, but I can see it out of the corner of my eye. I want to look at him but I don't want him to see me Look at him. Honestly, he's not a great person. My mom said he was disrespectful. And the reason he got in trouble was because he was smoking weed. No, part of me should like him and he told me no. But why is he looking at me in the hall and Why did he make me think he liked me. I don't know If he was just messing with me. Or maybe he was scared. I really don't know.