Want to preface by saying I want the best for my dad and his happiness but can't help how I feel.
My parents have had a very unconventional relationship. They divorced when I was a kid but then periodically got back together over the years.
They both had partners in the past but have now been been single for a long time. They have become each others companions and honestly all the times they've gone on holiday I've wondered if they were romantically involved. Their business, never pried.
With all grandparents now dead and me as an only child, the three of us have been close knit at Christmas and events for years.
My dad announced he has a new girlfriend and my mum seemed very hurt though she said nothing. It looks like she is now going to be dropped as companion. I want to be happy for him but I am worried about what will happen with my parents and about being left with no family unit at all.
On the side I've been with my partner for a year and he must think my family are nuts