Highschool boy part two

Well I think I have already messed up. BEFORE YOU YELL AT ME LET ME EXPLAIN! okay so what happened was the day after I sat with him me and him sat with each other in the morning but after that we didn't really talk that much. Some girl likes him apparently and since I haven't said anything I'm scared he might act on it. Maybe I'm just freaking out for nothing. But then on Friday I didn't see him until our shared class. We again didn't talk a lot UNTIL the girl between us said that she likes to see two men kiss on t.v (BL type shit) in which case I burst out laughing because what she said was so real and so random. Then (the boy I have been talking about in which we will call math boy now) started laughing too and said that I laugh over anything really. We almost got in trouble but its whatever. After class I had to wait till I saw him at lunch in which I did. And this is where I messed up. Once I got my lunch I didn't know if I was supposed to sit with him again since he hasn't said anything and I clearly don't get social cues. So I walk past the table. BUT as I'm walking past the girls that sit there too said something AND HE LOOKED AT ME BUT I JUST WALKED AWAY! I didn't say anything not a hi or a how are you. NOT EVEN A GLANCE. I FELT SO BAD. I still do and it's Sunday. I don't want him to think I was ignoring him because I swear I wasn't. I don't know what to do. Do I tell him that I didn't mean to ignore him because I was scared that his friends didn't like me? that im to nervous to just SIT WITH HIM!? Gosh this is to much. Maybe I'm just a crash out and over thinker or maybe he likes the girl who likes him. MAYBE IM JUST NOT HIS TYPE AND HE ONLY WANTS TO BE MY FRIEND. OMG I'm gonna like crawl under my bed FOREVER. I'm gonna talk to him Tuesday when we go back, if he doesnt hate me. Wish me luck, if anyone has any pointers on what to do PLEASE TELL ME I NEED HELP. Stay happy and see you in the next one. xoxo- Eli