job is right - we tend only to post the good on f/b - I know I do. I unfriended my h a while ago as I was worried I would open up my page and see a photo of him and ow plastered in front of me. The less I know the better - it only hurts when I do know.
I also don't want him to know what I am doing .... actually I do; but by removing him as a friend it makes what I am doing a mystery to him - he said to me before he left "I can always F/B stalk you, that is what everyone does nowadays" lol. It is funny to think he could be f/b stalking me, so that is why I only put interesting things I am doing on my status -
As for kids - neither h or I have our boys as friends now as they did not really want their parents knowing what they are doing - we did have them on until we felt they were old enough, just to keep an eye on them - it was an agreement of them having the f/b page in the first place.
NC is NC - if it hurts when you stab yourself with a pencil, then stop jabbing yourself with a pencil. It's tough and I have to resist doing it - I distract myself in that moment - I am always pleased later on that I did.