Ex bf....maybe bf again...

So my ex an i had a rough relationship last year.... we dated 4 months and argued alot..... he was rude sometimes... he never put me down or called me names... but he made me feel like i wasn't important.. like games were more important than i was... well i broke up with him after he decided we should take a "break" and i found out he was hanging out with one of my friends alot.... after we broke up they messed around and she left hin for his ex... then him and i talked and fought. Blocked each other.... now we are talking again... we are both juniors in high school. We have 3 classed together so i see him everyday basically..... we started talking more... and now we ft every night.... he asked me to call him babe... but then he said we aren't dating, but that doesnt mean we wont ever date.... so he keeps confusing me.... i haven't been able to forget about him either... none of my friends like him because of the way he treated me before... but he's acutely getting help and talking to a therapist now... to me he's changed.... i really want us to date again... but i want us to be happy.. and i am scared it will go back to how it was in the past... i just need some advice.... plz dont be rude or anything.