Boyfriend friends with ex

My boyfriend has an ex that he's still friends with. Normally I wouldn't mind. I have a ex who was my bf before we dated, we dated for two weeks and broke it off bc we were too good of friends. He talks about her a lot. He still has their Instagram pictures on his profile and texts her long text messages. He always talks about how great their relationship was and the only reason they ended it was because of her parents. Yea I am jealous. She's gorgeous!! Everything about her is beautiful. He knows I don't really like it so he doesn't really text her in front of me. But I know he still does..