Hi
@charliefarley
Welcome from me too to this forum.
I know how you feel. My OH and I have been together for coming up to 57 years and also had a full, fun, and enjoyable life. I have been full time caring for my OH for 7 years, starting with multiple myeloma bone cancer and straight into Alz's.
Yes it's v lonely without your partner to chat to, debate news, argue points of view, without sharing all the things we did and shared. The enormous emotional investment can be v tiring. You feel that only those in your position can truly empathise, but there are plenty, unfortunately, in that position.
You will need some separate time for respite, headspace, and if you aren't getting any respite care then you need to look into this. In my area, I get a sitter from Mind to be with my OH for 3 hrs per week so that I can go out - it's invaluable.
Do you have a supportive family that can help? I'm lucky enough to have my son no.2 coming one evening every week so that I can go and play bridge with my friends - also invaluable (even if the cards may be against you all evening, as, of course, can happen!).
You may feel like walking away sometimes. However, whenever that feeling comes over me I realise that this is now the time that my OH needs me most in her darkest hours, that are only going to get worse; and I know she'd do exactly the same for me if our positions were reversed.
One has to keep on keeping on. I can't see light at the end of the tunnel and I have no idea how the tunnel is, but that doesn't really matter. It is as it is. One has to accept the situation.
A virtual arm round your shoulder.
Best wishes.