Is it normal that my boyfriend doesn’t even want to hear his ex’s name or see her? Does this mean he still has feelings for her?

I’ve been with my boyfriend for a year now, and he had a very traumatic relationship with his ex. He even went to therapy and went through a period of depression afterward. His ex is still in the same friend group with his mutual friends. At first, I struggled with this a little, but I chose to trust him because I believe he loves me, and I love him very much too.
Here’s what happened: in that friend group, sometimes his ex comes up in conversations. My boyfriend tells me that it makes him uncomfortable, but he can’t even say her name—I end up saying it, sometimes even with a laugh. Later, when he noticed that one of his friends shared his ex’s story on social media, instead of watching the rest of that friend’s stories, he just muted her stories to avoid seeing anything about his ex
I’ve also had a traumatic past, and I know it’s not fair to compare, but I’m not like this—for example, I can say my ex’s name. With him, it feels like something still touches a nerve, and it honestly made me very sad. What do you think?

Is it normal that my boyfriend doesn’t even want to hear his ex’s name or see her? Does this mean he still has feelings for her?
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