I'm sorry to hear that you and your partner are having some difficulties in communicating. Receiving a diagnosis can be very shocking and it impacts each person differently. Have either of you spoken to someone else about it?
We do have some information and and a guide on Parkinson's and relationships, you can read that on our website here
I know other members on the forum have spoken about relationship issues before, hopefully other members will have some more advice for you. We're all here to support you.