Oh I get you completely, we drove our eldest to Uni at the other end of the country, made a weekend of it as it is 8hrs+ drive. I was fine, I was fine, I was fine until I absolutely lost it and was a puddle over dinner on the last evening. It took me by surprise (and I excused myself and cried outside away from him).
That was four years ago. And I don’t want to upset you further but he has only come home three times, he met his partner in his second year and they live together in the same area now, we visit once a year and speak on FaceTime a couple of times a week but it really was the end of him living at home.
Our daughter is going to live with us for a long time yet, she says (she’s early 20s) but our youngest (teen) wants to follow in his brothers footsteps with the same uni and career so I might have to wave him off too.
Obviously I’m happy for him and proud and love that he’s independent and flown the nest but it does also break my heart a little bit.
Also, I have severe ADHD, as does he, and a little discussed facet of that is the matter of completely forgetting about people when they aren’t around; and then remembering. And every time I think of him I go through the same little grieving process over again.