am I a horrible girlfriend for this?

Adri
I have to be the worst girlfriend ever. My ex posted something about we would have made 2 years that day and I never seen it untill my "friend" sent it to me and of course I was with my boyfriend. But the problem is. It's really getting to me. This guy did so much wrong to me. It was toxic he would threaten to kill himself to talk to me and he tried to get with all of my friends after. I even gave him a chance before I got with my boyfriend and he flat out said he didn't love me. So why is he doing this now. When in finally happy. Making me question everything. I'm honestly so pissed.