my complicated relationship please help 🙏🏽

So y'all my Newley ex boyfriend and I don't talk really anymore. It's really hard for me not to talk to him because we used to be BestFriends for 3 years and dated for around 8 months. We broke up on mutual grounds yet now he acts like he wants nothing to do with me and I'm so lost. I texted him for some answers and he responded but then stopped responding and left me on read. It wouldn't really bother me except for the fact we were partners in class then he moved and it's the middle of the year so I'm just lost on why he's acting this way so should I give him his space or should I check on the situation again because I really miss being friends and wishing him good luck on his games and stuff like that shouldn't make anything awkward.