Sharing Our Innermost Thoughts

I’m a 17 year old teen girl. My boyfriend and I have been together for 2 years, at first he used to care about my feelings, was always there for me and loved me, he would say that he will never leave me, that we’ll be together forever. We used to share each and everything with each other starting from our secrets to how we spent the day. I belong from an upper middle class family, my parents are traditional thinkers and they’re quite strict, they don’t want me to be in a relationship at such an young age and they always tell me that first I’ll have to be independent(successful) and then I can choose my life partner by myself. So when my bf told me all these things I thought that he was the one(still do) and we even got physically intimate, I Ioved him(still do) and trusted him with all my mind and heart and kept our relation a secret from my parents. I’m a board candidate(class12) as well as my bf. From past 5 months he’s completely changed as though there was nothing between us and when I asked him what was wrong, he told me he’s having family issues, that his family business hasn’t been going well due to the covid situation and told me that he needed sometime to be normal(tension free) again and I was okay with that, but then he started humiliating me infront of my friends and told me that he is not interested in me anymore that it won’t matter if I was there in his life or not but after some days he would again tell me that he loves me that he was sorry for saying all those things but then again he would treat me like that and again he would say sorry and I used to forgive him thinking that everything will be alright and then we would get intimate after that he used to tell me that he won’t leave me. But from last 1 month he’s behaving like he doesn’t care about me at all. With everything in my mind I can’t help myself but cry every single day and overthink I feel like i’m losing interest in the things i liked to do(hobbies) and also not being able to study properly, all I think about is him and our situation and it’s effecting my health and I have a cardiac health problem although doctor said that I am fine now but he told my parents that I shouldn’t take any kind of pressure as it could be life-threatening, he even knows about these things yet now he’s telling me that he cannot promise to be with me forever or be the way he used to be but he’ll be in a relationship with me. His family problem is not over yet that’s why I still think that everything will be alright with time. I don’t know what to do, should I be with him? and even if i’m not I feel like I won’t be able to get over him.
Please give me some advice. Thank you.