Is it okay to feel jealous of my boyfriend's ex girlfriend?

I’d admit I have insecurities.. I also have anxiety and depression. I also had a promiscuous past. And when my boyfriend and I talk sometimes about his ex girlfriend, I can’t help but feel little jealousy over her.

She’s beautiful, she’s smart and wise. She didn’t have a promiscuous past and I feel like my boyfriend appreciates her better than me. My boyfriend loves me but he hates me because of my sexual past. He’s punishing me for what I’ve done in the past.. even if I did that before I met him. He totally appreciates her more than me. I wish I could be like her

She also knows what she wants and she’s a really independent woman.