crush help

Okay imma just say everything rn. So during school me and my crush had a study hall together. Just me, him, and my bff. And we would all just talk and stuff. But near the end of school he started getting addicted to his phone and he started watching netflix during study hall or playing pokemon games. I made it pretty obvious that i would rather be talking to them then have us all be on our phones. And i would really try to talk to him and i would try to carry on a conversation but it just became really hard to bc i he was on his phone. I even almost told him i liked him but then i found out that he didnt want to know if anyone liked him so i didnt end up telling him. And he just sorta stayed that on his phone and stuff until school ended, but we still stayed friends and things. 
Also during school, he wasnt allowed to give out his snapchat or his phone number. So i was like alright thats fine but then a few days after he gave his sc to this girl that is extra friendly to him (and tbh im scared about her) but he said they tricked him bc he didnt know the snap code lets you add people, but he kept them on anyways. So then he let me add him, and school ended. Then a few days ago he sent me a video on sc of Just casual stupid videos you would send your friends. So i replied a laughing face and the next day we just sent each other them, but he wouldnt reply to mine. He would just leave me on open until he sends me another video or picture. And like thats pretty normal of him bc he usually doesnt reply unless its a question that your sending him or something. Then yesterday i asked him a question about the summer hw and he just left me on open. And then all the memories of me and trying and him just being unreceptive and things, it just hurt. And then i started crying and things and idk i guess just everything on top of each other just caused me to crack and i really need adivce, i dont know what to do. If you read this far thank you so much. What do i do?