Does the person I like like me back?

I was wondering, does he like me ? I like this person, and he goes to the same school and summer school as me. Here are some of the times when we were together:

2 weeks ago at summer school, I left the classroom to get a drink of water. Later, he comes out of the classroom to get a drink of water. I waited for the person in front of me to finish, and then all left was him and me. I looked back at him and walked back, wanting him to go 1st. He just stood there with a smile on his face, unsure of who to go 1st. We stared at each other, smiling, for a few seconds until he finally went 1st.

At summer school, we always walk a "fitness walk (walking around the city)" everyday. Last week, on Friday, when we were walking our fitness walk, I was right in front of him. Suddenly, I heard faster footsteps right in the back of me and I noticed they were his. He stopped and paused for a moment, and said, "Oh my gosh, why am I following her ?" The next thing I know was that he was bonking his head with a soda bottle.

After our fitness walk, when we went back to the classroom, I caught him staring at me with a smile on his face, and his body was facing me and his arms (forearms crossed) were open towards me. I suddenly got nervous, so I quickly looked away. After a few seconds after I looked away, I looked over to him again and he was still staring at me in the same position, so I quickly looked away.

This happened today. I was texting my friend (she knows I like him) and she went to my crush's house (my crush has a sister that is friends with my texting friend). She asked my crush if he liked anyone, he said no one. After that, they started talking again. My crush asked my friend if she knew me, here is how the conversation went: Crush: Do you know (my name) ? Friend: Yes, why ? Crush: I don't know... She's very shy and quiet and doesn't talk to people... but she's pretty nice.

Sorry if I sound desperate or self-centered, I'm not trying to. What do you think ? Does he like me ? Thank you.