So basically me (18F) and my boyfriend (19M) have been seeing each other for about a year and a half. The girl he was with before me he had been obsessed with for a long time. They had hooked up 3 summers ago, and 2 summers ago were hanging out and doing other stuff, they were never in a relationship tho. While they were together she was taking to other guys and didn’t want a relationship bc “she needed to heal.” In the fall after that summer she basically went ghost on him and he was heartbroken about it. She had cut him loose around October and I started seeing him in November. We were never serious when we started dating either, bc i had recently been broken up with and that’s not what I wanted at the time. Around the January mark he started calling me his gf which at that point I had liked him a lot so I was with it. But he always struggled with talking about his old girl while we were together. He would always briefly mention her, shit on her, or just talk about her. I didn’t know of this till a few months ago that he was stalking her instagram that Jan-May period we were together. There have been 2 occasions where his little sister has sent him photos with 1) bad photos of her and 2) a homecoming tiktok of her and her new bf. (which i was in the room for the second one and got upset at him.) I told him to quit bringing her up even if he doesn’t realize he’s doing it. Or bringing up conversations that connect to her. He hasn’t since, he claims he doesn’t care abt her and he only wants me, he thinks i’m doing it bc im “looking for a reason to breakup” but im not. But the cherry on top is he still talks to her two brothers. To be fair, her one older brother works for my boyfriend’s dad, and he knew him for like a few months before her. He was actually the one to introduce him to her. But it bothers me bc yesterday night he goes “i see him as a cool older brother.” and he also said he “looks up” to her other brother bc he plays football at the school he wants, and he always gets excited to see him. It just makes me sad bc everytime i bring up it kinda bothers me he either thinks im trying to start or that “it’s not a big deal and he doesn’t think about her.” But if roles were reversed I feel like he would be upset if I was hanging out with my exs family. I don’t wanna break up but it bothers me all the time.