I think i want to brake up! But i might be making a mistake

So i have a boyfriend that i just started with a couple of months ago. I really really like him but there is a lot of things that happend with each other for me to continue with the relationship. I tried forgetting things that he did but it’s impossible. The most annoying thing that he does is the fact that we hang out every day right after we are done with studying and shit but after that he disappears and never texts me unless i do it first and even if he texts me back, he takes HOURS to respond when i now he is on his phone and also is such a DRY ass texter!!🙅‍♀️

I am also very hurt by the fact that when we had our first fight and we ended things he went DIRECTLY to another girl that i dont like at all. His excuse was that he was high and drunk but goddam i felt like he was going to replace me that quickly like if i was trash. I had a talk with him about it but he seemd like he didnt give a shit and just said the things that i wanted to hear.

What should i do? Revenge? Cut him off?? I really like him but i cant go on.