My boyfreind gave me anxiety attack

y boyfriend texted his ex and this random girl on *** and told her that he was single when I found out we had a huge fight after almost a month of a rough patch, I broke up with him but at times, He would call me and text me and I did the same but I made it clear that it was over and I joined a dating platform because I wanted to not focus on that heartbreak and I met some people and one of then sent me a nude but we never had a sexually driven conversation and I kept talking to him but when my boyfriend and I patched up, I told my boyfriend about it and he got super mad at me and said so many bad things about my friends, called me names and just said bad things for about 3 hours and I had to beg him to call me and he blocked me from everywhere but then calmed down but still kept saying mean things, we eventually made up but he has been treating me like *** after that and I honestly don’t think I was at fault and he has made worst mistakes and the day he got to know about it, he literally used things that only he knows against me to the point where I had a literal anxiety attack and he said nothing about it