CR, I'm very sorry for your loss. We all share that feeling of loneliness and although it may not help, you are not alone. There are way too many of us who are experiencing the same thing - laying in our beds, plopped on our couches, going through our days like a robot, feeling numb (at best) or crushed about nearly ever part of our lives now.
My husband, just 50, died two weeks ago from brain cancer. We were only married 9 months before he was diagnosed. He had a small family and we hardly knew each other so there isn't much support for me from there. You are your partner's widow in every way and I hope his friends and family can support you as such.
If you share where you live (in general) maybe others can suggest resources. My town (Madison, WI) does have a group for young widows and I'm attending my first meeting next week. If you can find a group near you, I'm sure they will be happy to take you under their wing.