Does my crush like me?

I'm getting mixed signals from this guy at my school. He's a year younger than me (I'm a sophomore). He's really cute and I've developed a crush on him. He's my grandmas neighbour and we used to be friends when were little until one day he threw a rock at my head (accidentally of course) and my grandpa never let me go over there again. He would always chase me with worms and my mom said he liked me but I didn't like boys back then.

My grandma had a fiftieth anniversary party a couple of years ago and he was there. My mom said he kept looking at me and again she said she thought he liked me. After dinner he invited me over to his house but I was in the bathroom then so my cousin answered the door. I went over but I still didn't like boys then so I stayed by my cousin he whole time and I didn't even speak to him. I know it was a rude and stupid thing to do but I was twelve and awkward at the time.

He goes to my school now and whenever I see him in the hallways he's always with a huge group of friends. He has a bunch of friends now and I'm afraid he's he moved on which I can understand why. I was totally rude to him then even though I didn't mean to be. Whenever I see him he looks at me and then looks away. I decided to Facebook message him one day and we were talking about TV and then he just randomly left without saying goodbye. I didn't say anything that could've weirded him out or anything. One time I walked by him when he was alone and he said hi to me but it was really quiet and he mumbled it almost like he was shy. But he can't be shy considering he has so many friends.

I'm really confused does he still like me or has he moved on?