Thank you all, I do get on with life. However Agnurse, I presume you don't have a child, because you would know just because they grow up and become an adult doesn't make you love them less. It never goes. They can go to the other ends of the earth and live their own lives, thats their decision, but you have their love and they yours and some form of communication, however minimal. We as parents want them to live their lives and be happy, we cannot however throw a switch and say, job done and not mind if we are put aside.
What slang do you remember school teachers using?
as maddyone has posted "you never lose your love for your adult child whatever they do". There is no closure and no way to grieve for someone still living.