No magic words of wisdom, my wife was dx 4 years ago, when just under 50, looking back the symptoms had been there for probably another 5 years, but caused no real problems. If you think too deeply about what has happened and beat yourself up about what might happen you could drive yourself mad ... don't.
Do whatever it is that makes you happy, sometimes it insn't the best idea to continually talk about it as often it is merely a reminder of what is happening to you. Surround yourself with supportive positive people and to hell with everyone else if it helps, in truth only your family, specialist and trusted people really know what is happening, in addition to other people with the same condition.
Laugh as often as you can, don't get too low when days or things get ontop of you .... they do and they will, tomorrow will hopefully be better, if it's not, then the next day will.
Remember this isn't a terminal condition, well not really any more terminal than anyone else, PD or not. Keep smiling and enegerise yourself off other people.
Everyone deals with it in their own way, some don't want to shout about it or be a flag bearer, and not being a particularly religious person, I haven't got the answer to the question "Why the love of my life" ..... other than "WHY NOT".
Try not to be overly upset or bitter, people often don't understand about your situation, often the people who you think know you best, and family, can often suprise you with their insensative comments that occasionally beggar belief ..... that's a failing in them, not you, so treat it and them with the contempt they deserve.
It's tough sometime watching your 'better half' suffer, it is unfair, it's s***, but thats life.
Also be good to yourself sometimes, you need your strength to recharge your batteries, you're not being disloyal, but there's no point in the Captain jumping overboard if his ships going down. Researching everything isn't always good, and opinions and advice is just what it is Opinion and Advice ... not instruction.
You can occasionally feel alone, but your not .... the love of your life will always be there, and need you ...... Lifes a tough game, there will always be people worse off than you, and amazingly I quite often find they are the ones that moan the least. whereas the type of people that usually whinge the most can often be found down at the local tennis club (or similar) bleating about the crust on the sandwiches curling up.
Smile, laugh and give yourself a pat on the back sometimes, you deserve it as I have an idea what you're going through, don't beat yourself up for previous, current or future mistakes ... you're doing the best you can and nobody could do any better.
I herewith award you the PD equivolent of the Victoria Cross