To me loneliness is that pit you get in your stomach when you go to reach for someone in the middle of night and they aren't in bed next to you. The ache in your heart when you think of someone that's no longer around and wish that they were still with you. Of course some might associate those feelings with grief as well and they wouldn't be wrong, to me they run very close at hand. I also think it's that acknowledgment that you have no one, or one specific someone, with you anymore. I think if you fight it or never truly admit they're gone you probably won't get that feeling of "loneliness". I've rarely felt alone in my life and the few times I have it was fleeting but heart wrenching at the same time. It's not something I'd like to feel again soon, that's for sure.

DLO