I (F18) bf (M21) had a cool off

Me and my boyfriend had a big fight and kept fighting lately, I’m not the type of girl to give up and leave when the issue is just about fighting and no matter what I want to fix things, I asked what does he want to happen to our rl and he said i want us to take a break from each other because he said our relationship is draining at the moment . We both said hurtful words to each other, I regret saying all those hurtful words to him since I was carried away by my emotions and I said that when i was mad.I feel so guilty I tried reaching out, but he hasn’t replied. I told him I’m sorry for saying those hurtful words to you and i want to fix things out and not in text. I asked him twice if we can talk about this personally and he said I’m not emotionally stable to talk about it in person. I get anxiety attacks every night knowing I broke his heart. I feel so bad and I didn’t mean it. I want to improve our communication and fix things. What are some healthy ways to reconnect and rebuild our relationship?I miss him a lot and he means a lot to me. 🥲 I want to make things right.