What should I do?

Ophelia • She/her

So I’ve been with my bf for nearly 9 months but idk what’s wrong, something just is. The problem is that all my closest friends are rly close to him so I feel like I can’t talk to them cause I wanna break up with him but I knw that they will tell him. (Btw I will break up with him but cause I’m not seeing him for a week I wanna do it in person). And I don’t know what to do cause I can’t even ask for their advice without them telling him.