Why can't I shake off my boyfriends ex?

Anonymous
She was horrible and really fucked with me. My boyfriend and I are done with her. But it just I'm insecure and whenever he talks about his ex I suddenly get angry or just sink into a really low depression. Mind you he doesn't bring it up, unless someone asks or he tries to not get into a conversation about her because of how I feel. But his dad does or someone asks. I had asked his dad to kindly not bring her up or talk about her because she really messed with me.
Just I can't seem to let it go and I'm unsure as to why I'm jealous of her. She was really messing with me and it fucked me up bad, now I'm insecure feel not good enough and get intrusive thoughts about my boyfriend and her. It's just left me in a mess and my boyfriend always tries to make me feel loved. But the thoughts and insecurities are there.
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+1 y
It's like everytime I get reminders of her or just see someone that looks like her, I start to grow anxious, scared and insecure. This only started after she started messing with me. We are done with her. But the affects of her messing with me like sending me a picture of herself. Mind you I never payed attention to her features before. But after that I started to see that she's more prettier than me. Then, ontop of that bugging me to text my boyfriend and telling me that they were really close
Why can't I shake off my boyfriends ex?
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