Yep the loneliness and isolation can also come from other people's attitudes. They just don't get how lonely and stressful our lives can be. And we don't have the partner to share that stress with/protect us etc.
I lost a lot of 'friends' when I split from the ex and was surprised how few people actually bothered to ask how I was. Out of sight, out of mind.
Walking to school people I knew would say 'hi' to my daughter but it was almost too much for them to stop and have a chat with me...people just don't want to know. They have their own problems I guess.
Also I have had family dropping comments about 'single mothers' and then saying 'oh, not you ofcourse' which I find quite isolating.
And then there is the whole ex thing when they don't bother to call to see how you and your kid are ever.
I found in the end I could go a whole week without anyone bothering to contact me outside work and seeing grandparents for babysitting once a week and got my head stuck up my ass worrying about my new found loneliness.
So then I made several attempts to 'go out' once a week to a girlie 'quiznite' and infact have been invited to a party tonight but still 6 months + on I find people just want to talk to me about the ex and what he did and what his GF said etc etc and I just want to get on with my life.
So now I am focusing on me and my little one and have a couple of people who I speak to during the week but I find that any day-to-day stresses of being a parent I have to shoulder alone.
Hey ho, that's life I guess. At least me and the dd are healthy and life can only get better, eh?! PLus our home is much calmer, happier environment now we don't have the ex's problems to deal with.