Why does this give me the ick

So my bf has extreme social media issues. And we’ve had past issues with it. Him breaking my boundaries I set and looking naked women up, only fans, and flirting with friends secretly. On his iphone i noticed that the four main apps at the bottom are tik tok, Snapchat, safari, and Instagram… he’s emotionally cheated and I have spoke to him about my boundaries and how I feel about us being 24 years old and him spending his time with that stuff. Is that wrong for me to voice it or is it dumb that I even care since it’s his property and his life. He also has friends who influence him to emotionally cheat. Sending him only fans girls they fantasize about fucking that are 19 years old. And then his best friend who tried to make out with me behind his back. And he’s going out for drinks with both of these people tomorrow…