So first of all a sex researcher comes up with the term, in relation to treating delayed ejaculation. His model is quoted approvingly in Principles and Practice of Sex Therapy, Fourth Edition 2006.
The word arrives on Wikipedia, Urban Dictionary, etc.
A "relationship anarchist, polyamorous witch, and feminist punk" writes about her experiences on Medium:
medium.com/the-establishment/im-autosexual-autoromantic-and-in-a-relationship-with-myself
So when she decides she wants to marry herself, Metro writes it up:
metro.co.uk/2019/03/02/whats-it-like-being-autosexual-when-youre-attracted-to-yourself-8792806/
Then Pink News treats it seriously:
www.pinknews.co.uk/2019/03/06/autosexual-sexually-attracted-yourself/
And The Guardian takes the piss:
www.theguardian.com/society/shortcuts/2019/mar/04/age-of-the-autosexual-the-people-sexually-attracted-to-themselves
At what point does this become "real" - another option for people to shape their lives around? When will the government have to consider the tax implications of marrying oneself? If you marry anyone, your previous will is legally quashed, so how would that play out?
And do serious sex researchers see the similarities to autogynephilia?