Why not take a break? You are thinking in black and white... and while yes, I agree he does need to make a decision...so do you... and neither one has to be final, forever. Do what you need to for yourself right now.

Do you know the term don't burn your bridges behind you? I would advise that... leave on as good a note as you can, leave the door open to return, or at least set up a different situation in the future.. and find yourself some space and breathing time! TC!