Do PD Patients turn into lying, uncaring a*******?

I am beyond sad and at my wits end. I have told my husband I am on the brink of a nervous breakdown (I am aware they are now called Major Depressive Disorders) and his response is virtually nothing. I have never seen such a drastic and dramatic change in a person. My ex husband and I developed irreconcilable differences, but we still loved each other, in fact, after we divorced, we not only remained good friends but we remained best friends. Unfortunately, I lost him three years ago at the age of 55. My current husband is the love of my life, or so I thought. He was diagnosed about 6 years ago and his Neuro admits he has a very mild case. He is on a low dose of meds. He has however, turned into the most uncaring, uncompassionate men I have ever known. He used to be caring and warm, and now - he is borderline cruel. I approach him with an important topic and he ignores me, and then asks "are you done? I need some coffee." I just asked him if he even loved me at all anymore, after a night of arguing - well, on my part - he barely replies - he just sits there and stares at the TV. He said nothing. When pressed on the issue, I simply said just tell me if you love me anymore and his reply was 'Now is not the time nor the place'. I told him he has become the most uncaring and unsympathetic people I have ever met and that he is NOT even close to the man I fell in love with. I told him I had severe chest pain and I couldn't breathe - I am a stroke risk and he is upsettting me so much I am experiencing symptoms - and he simply ignores me. I called him on his cell from upstairs because I had something important to discuss with him, and he fumbled and never answered. He then called up to me 'Can you see if you can get this TV to work?" I was livid. I asked him why he had replied that way, knowing I obviously needed to talk to him. He replied "I figured you would tell me if it was important", YES - that was the reason for the call. I am so stressed I can barely function.
I honestly feel he does not love me anymore, yet my entire world revolves around him. He had two CT's this past month and I spent hours reviewing and researching - my life revolves around caring for him, making sure he has his meds, the foods he loves, everything. Yet I fall on the driveway so hard I cannot breathe and he doesn't even bother to ask me if I am ok. I do not know how to handle this un loved feeling.