I live with my bf and I’m going through something it’s not that I don’t ever wanna be with him but I just can’t right now. How do I end it 😭

We live 3 hours away from home and I’d hate to leave him here alone and I’d hate to cry all the way back on the train.

I don’t. Want to hurt him. I don’t know what to say to him. It wouldn’t be out of the blue. He’s sweet but I’m mental health cannot take it. I need to be alone