Am I Overreacting for considering break-up?

I have no one to talk to, and I'm going insane. I can't tell my friends, they will definitely tell me to break up with him and I still wanna protect his image idk. I'm so fucked up. My head hurts so much. If you were in my situation, what would you do? I know it seems obvious, but I love this man so much - so much. I don't know what to do. I've dreamed of a life with him, and I've always been faithful. AIO for considering break-up? But how do I move on from this, I'm so lost. It hurts so much. Leaving feels so painful than staying and idk what to do. At the same time, I know I'll be very toxic from here on. But I love him so much. Will it ever get better.