Am I just insecure?

My boyfriend of almost 1 year has a girl best friend and their friendship has always bothered me. He used to talk about her constantly, and he would mention her any chance he’d get. He’d talk to her at night and they would call each other every week, they texted almost daily but he would never do it around me. I told him that their closeness was uncomfortable to me and that he shouldn’t give another woman that much attention if he wants to be in a relationship with me. In the beginning of our relationship I didn’t feel like his favourite girl at all because of how much he seemed to adore her. It felt like she was his crush and I was his friend listening to him go on and on about her and her interests, her personality and education and her life etc. It still makes me sad to think about it because there have been moments where I have doubted if i’m the one he really wanted, or if he just settled for me and is patiently waiting for his friend to break up with her boyfriend so that he could finally get his chance with her. He has “bragged” about what kind of girl she is, sexually speaking. That she gives weekly blowjobs to her boyfriend and that she only sleeps with people she’s been in love with. He’s mentioned her body count so much it’s like he’s admiring her, i’m also very bothered by the fact that they talk about sex together and that he comes to me all impressed with information about her sex life. My boyfriend has tried to embarrass me before because of my body count, therefore it bothers me when he praises her so much for it, like he wishes that I was like her. My body count is 7, hers is 3. His is 23. What makes me wonder is that his female friend resembles his ex and she is also exactly his type. My boyfriend told me early about his previous girlfriends, and that he’s only dated blondes (i’m brunette). His friend, as well as all of his exes, is blonde and skinny and very beautiful. I once saw a picture of him and his ex, and thought that it was him and his female friend. They could really be siblings. It does make me feel insecure and jealous because I know for sure that he finds her attractive. If not, I don’t know why he would have ever dated his ex when they look so much alike. I would never tell him to stop talking to her, I don’t want to control him. This is just me and my thoughts, I’m not sure if this is something I need to do better for it to work out between us. I want his friends to be mine as well, but I don’t think I can relax with her as his best friend.