If evidence emerges that at least one age group accepts and thinks it's OK to have an AI girlfriends or AI boyfriend in the United States, Canada, or Western Europe, this market will resolve to the year I have made that conclusion.

By socially acceptable I mean not facing substantial backlash, mockery and so on 

I'll rely in the mainstream media, opinion polls, and anecdotal evidence. One example would be someone like Ofcom saying 40% of brit teens have had a relationship with an AI.

This market resolves to longer than 2037, if ever on December 31st 2037. 

I'll add year pairs as the time goes by from Other.