Glioblastoma

My boyfriend has  for the past 2 months had numbness in his right leg and foot losing his balance also..this week he has been diagnosed with Glioblastama stage 4, I am absolutely heartbroken as he is only 46. The consultant has told him surgery is a definite no and Chemo and radiotherapy will more than likely make him very sick. He has chosen to take no treatment and he has been told he has 6-9 months. I have no idea what to expect..