It’s a horrible feeling isn’t it, when your with someone you’re also with their family and so when you separate you loose them to.
I think moving on is finally accepting that that part of your life is over and you rebuild something new that helps you and makes you happy.
It can be lonely and frightening and sometimes feel hopeless. But hopefully with time it’ll get easier.
As for invites, I was always the one that organised everything so now I have the stance of if you truly wanted that time with me you would make the effort to.
A separation can be an eye opener for so many things in your life.