I'm so sorry to hear about your loneliness!
I understand a little as recovering from the injury I sustained has made me very lonely too. Luckily, I have a wonderfully supportive boyfriend who has stuck by me through this whole ordeal. I can't imagine what this would be like without him.
Could you consider getting a kitty to help comfort you? Or a calm aging dog that needs to be rescued and doesn't need as much care as a young pup?
I've considered getting a pet myself to help through the lonelies, but it's just not feasible right now... I wish there was a service that could bring a fluffy animal to people dealing with major health problems for just a few hours at a time. Then we could get the benefits of petting a kitty or dog, but we wouldn't have to take care of them.