I'm terrified of my boyfriend? Please help?

Okay, now for details. Me and my boyfriend got into a little fight, and I started ignoring him for a bit. Just a little silence. And then out of nowhere, he comes at me saying he wants to break up. The thing is, I love this man with absolutely all my heart, so when he said that to me, I was filled with horror and dread. I instantly started questioning why he would say such a thing and he was just saying random things and he seemed very unsure. I texted my friend about it, and my friend texted him asking him if he broke up with me, and my friend showed me the screenshot where my boyfriend answered "I don't know". Which just proved he was conflicted. I spoke to my boyfriend more, and told him how scared I was, and I admitted to my mistakes, he then eventually immediately regretted saying what he said, came to his senses, apologized for threatening to break up with me, and that he could never bring himself to leave me. And then we had a full make up day together and he showered me in reassurance, but the thing is, I'm still scared? I feel like any moment he could change his mind. Or he'll leave me..it's like a trauma. i don't want to feel this way. Any insight?