How do I (28F) navigate my partner’s (30M) close friendship with his ex without seeming controlling?

My boyfriend of 8 months has remained close friends with his ex-girlfriend of 3 years. They dated for about 2 years and broke up amicably before we met. I trust him completely, but I’m struggling with some of my own insecurities about their friendship. They text regularly, grab coffee occasionally, and she’s part of his main friend group, so she’s often at group hangouts I attend. She’s actually really nice, and I can see why they’re friends. My boyfriend is always transparent about when they talk or hang out, and he’s never given me a reason to doubt him. The issue is entirely on my end – I sometimes feel weird about their history and worry I’m being compared to her, especially since they share so many inside jokes and memories. I don’t want to ask him to limit the friendship because that feels unfair and controlling, but I also don’t know how to work through these feelings

I’ve tried talking to friends about it, but they’re split – some say it’s normal to feel uncomfortable, others say I need to just get over it. I’m worried that if I don’t address these feelings now, they’ll grow into resentment or cause problems down the line.

Has anyone else dealt with something similar? How did you handle the insecurity while still respecting your partner’s friendships? I want to grow from this rather than let it become a bigger issue.

TL;DR: My boyfriend is close friends with his ex, and while I trust him completely, I’m struggling with insecurity about their friendship. Looking for advice on how to work through these feelings without being controlling.…