That's very true. We dropped DS off in Cambridge today, took all his computer and clothes and food in, then out for a late lunch during which I completely forgot he wouldn't be coming back with us. Then we left the restaurant and instead of walking across Parker's Piece, he followed us back to the carpark, I just thought he was being companionable, but, he forgot he wasn't coming back with us too! I did laugh, we gave him a lift back to his house.
Now, the house is empty, DBH is outside in his study, the fridge and cupboards are bare of anything I can nibble (I send it all back with him)and the diet is upon me again.
No, I don't want to appear vulnerable either. I know exactly what you mean there. I'm worried I might be set adrift on an ice floe or something - as being way past my usefulness!