Someone help please...

So, me and this guy broke up and we had been talking for ages afterwards and we were still a little bit flirtatious towards each other as a joke... But I caught feelings again, so I didn't know what to do... He asked if I would like to go to his at the holidays but I wasn't able to and now that we're back at school, he hasn't spoken to me.... At all... He's been sending blunt replies, but I think it may be because of his depression, but could someone help me on how to deal with not talking to someone who doesn't like you back anymore? Probably won't get any replies but it's worth at least a try

Thanks 💕