Hello Penny8
My wife (PWD) are both 67 and she was diagnosed in January 2014 (like many others, it took around 2 years to get to this stage though).
I care for her at home still and we are still able to get down to the pub at weekends and she goes to the day centre each Wednesday.
Even in the early stages, the dementia (FTD) affected her speech and her cognitive abilities declined quite rapidly. Plus side is she's retreated into a happy place and no longer seems to suffer with the anxiety and worries that plagued much of our married life!
Like you though, I do find that although we are together pretty much 24/7, because she is no longer able to communicate well and she is in her own little world, I can feel quite lonely at times. And yes, I do miss the close relationship and hate that I am a carer now, not a husband.
We've made some very good friends from the pub and they provide a bit of a lifeline for me - adult conversation not the least. Some work in the caring profession (others have done so in the past) so they are very good at "caring for the carer".
As Canary said, exploring opportunities to get out and about, be that clubs, hobbies, volunteering etc will get you socialising more.
Good luck and keep us posted.
Phil